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Finding the Fourth Proportional to 8,012.78, 11,055.19 and 4,654.94

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Solution

The fourth proportional to 8,012.78, 11,055.19 and 4,654.94 is: 6,422.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,012.78 : 11,055.19 = 4,654.94 : x
  2. Step 2: Convert to fraction form
    8,012.78/11,055.19 = 4,654.94/x
  3. Step 3: Cross multiply
    8,012.78x = 11,055.19 × 4,654.94
  4. Step 4: Simplify right side
    8,012.78x = 51,461,246.14
  5. Step 5: Solve for x
    x = 51,461,246.14/8,012.78
  6. Step 6: Final answer
    x = 6,422.40

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Half scale
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Double scale
Find fourth proportional to 8,013.78, 11,056.57 and 4,655.94
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.