Home / 8,103.59-11,188.11-6,615.05

Finding the Fourth Proportional to 8,103.59, 11,188.11 and 6,615.05

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Solution

The fourth proportional to 8,103.59, 11,188.11 and 6,615.05 is: 9,132.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,103.59 : 11,188.11 = 6,615.05 : x
  2. Step 2: Convert to fraction form
    8,103.59/11,188.11 = 6,615.05/x
  3. Step 3: Cross multiply
    8,103.59x = 11,188.11 × 6,615.05
  4. Step 4: Simplify right side
    8,103.59x = 74,009,851.11
  5. Step 5: Solve for x
    x = 74,009,851.11/8,103.59
  6. Step 6: Final answer
    x = 9,132.98

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Half scale
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Double scale
Find fourth proportional to 8,104.59, 11,189.49 and 6,616.05
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.