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Finding the Fourth Proportional to 7,342.76, 10,132.88 and 3,985.48

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Solution

The fourth proportional to 7,342.76, 10,132.88 and 3,985.48 is: 5,499.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,342.76 : 10,132.88 = 3,985.48 : x
  2. Step 2: Convert to fraction form
    7,342.76/10,132.88 = 3,985.48/x
  3. Step 3: Cross multiply
    7,342.76x = 10,132.88 × 3,985.48
  4. Step 4: Simplify right side
    7,342.76x = 40,384,390.58
  5. Step 5: Solve for x
    x = 40,384,390.58/7,342.76
  6. Step 6: Final answer
    x = 5,499.89

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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.