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Finding the Fourth Proportional to 7,242.90, 9,995.50 and 4,449.30

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Solution

The fourth proportional to 7,242.90, 9,995.50 and 4,449.30 is: 6,140.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,242.90 : 9,995.50 = 4,449.30 : x
  2. Step 2: Convert to fraction form
    7,242.90/9,995.50 = 4,449.30/x
  3. Step 3: Cross multiply
    7,242.90x = 9,995.50 × 4,449.30
  4. Step 4: Simplify right side
    7,242.90x = 44,472,978.15
  5. Step 5: Solve for x
    x = 44,472,978.15/7,242.90
  6. Step 6: Final answer
    x = 6,140.22

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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.