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Finding the Fourth Proportional to 8,655.79, 11,948.97 and 5,070.25

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Solution

The fourth proportional to 8,655.79, 11,948.97 and 5,070.25 is: 6,999.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,655.79 : 11,948.97 = 5,070.25 : x
  2. Step 2: Convert to fraction form
    8,655.79/11,948.97 = 5,070.25/x
  3. Step 3: Cross multiply
    8,655.79x = 11,948.97 × 5,070.25
  4. Step 4: Simplify right side
    8,655.79x = 60,584,265.14
  5. Step 5: Solve for x
    x = 60,584,265.14/8,655.79
  6. Step 6: Final answer
    x = 6,999.28

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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.