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Finding the Fourth Proportional to 7,242.52, 9,987.98 and 4,585.40

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Solution

The fourth proportional to 7,242.52, 9,987.98 and 4,585.40 is: 6,323.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,242.52 : 9,987.98 = 4,585.40 : x
  2. Step 2: Convert to fraction form
    7,242.52/9,987.98 = 4,585.40/x
  3. Step 3: Cross multiply
    7,242.52x = 9,987.98 × 4,585.40
  4. Step 4: Simplify right side
    7,242.52x = 45,798,883.49
  5. Step 5: Solve for x
    x = 45,798,883.49/7,242.52
  6. Step 6: Final answer
    x = 6,323.61

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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.