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Finding the Fourth Proportional to 5,443.47, 7,512.12 and 3,319.11

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Solution

The fourth proportional to 5,443.47, 7,512.12 and 3,319.11 is: 4,580.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,443.47 : 7,512.12 = 3,319.11 : x
  2. Step 2: Convert to fraction form
    5,443.47/7,512.12 = 3,319.11/x
  3. Step 3: Cross multiply
    5,443.47x = 7,512.12 × 3,319.11
  4. Step 4: Simplify right side
    5,443.47x = 24,933,552.61
  5. Step 5: Solve for x
    x = 24,933,552.61/5,443.47
  6. Step 6: Final answer
    x = 4,580.45

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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.