Home / 8,142.72-11,235.06-4,785.36

Finding the Fourth Proportional to 8,142.72, 11,235.06 and 4,785.36

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Solution

The fourth proportional to 8,142.72, 11,235.06 and 4,785.36 is: 6,602.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,142.72 : 11,235.06 = 4,785.36 : x
  2. Step 2: Convert to fraction form
    8,142.72/11,235.06 = 4,785.36/x
  3. Step 3: Cross multiply
    8,142.72x = 11,235.06 × 4,785.36
  4. Step 4: Simplify right side
    8,142.72x = 53,763,806.72
  5. Step 5: Solve for x
    x = 53,763,806.72/8,142.72
  6. Step 6: Final answer
    x = 6,602.68

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Half scale
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Double scale
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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.