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Finding the Fourth Proportional to 5,776.32, 7,972.05 and 3,539.71

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Solution

The fourth proportional to 5,776.32, 7,972.05 and 3,539.71 is: 4,885.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,776.32 : 7,972.05 = 3,539.71 : x
  2. Step 2: Convert to fraction form
    5,776.32/7,972.05 = 3,539.71/x
  3. Step 3: Cross multiply
    5,776.32x = 7,972.05 × 3,539.71
  4. Step 4: Simplify right side
    5,776.32x = 28,218,745.11
  5. Step 5: Solve for x
    x = 28,218,745.11/5,776.32
  6. Step 6: Final answer
    x = 4,885.25

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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.