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Finding the Fourth Proportional to 7,242.03, 9,985.55 and 6,717.15

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Solution

The fourth proportional to 7,242.03, 9,985.55 and 6,717.15 is: 9,261.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,242.03 : 9,985.55 = 6,717.15 : x
  2. Step 2: Convert to fraction form
    7,242.03/9,985.55 = 6,717.15/x
  3. Step 3: Cross multiply
    7,242.03x = 9,985.55 × 6,717.15
  4. Step 4: Simplify right side
    7,242.03x = 67,074,403.60
  5. Step 5: Solve for x
    x = 67,074,403.60/7,242.03
  6. Step 6: Final answer
    x = 9,261.82

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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.