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Finding the Fourth Proportional to 8,655.71, 11,945.12 and 5,298.47

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Solution

The fourth proportional to 8,655.71, 11,945.12 and 5,298.47 is: 7,312.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,655.71 : 11,945.12 = 5,298.47 : x
  2. Step 2: Convert to fraction form
    8,655.71/11,945.12 = 5,298.47/x
  3. Step 3: Cross multiply
    8,655.71x = 11,945.12 × 5,298.47
  4. Step 4: Simplify right side
    8,655.71x = 63,290,773.75
  5. Step 5: Solve for x
    x = 63,290,773.75/8,655.71
  6. Step 6: Final answer
    x = 7,312.03

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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.