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Finding the Fourth Proportional to 3,737.76, 5,618.79 and 3,621.12

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Solution

The fourth proportional to 3,737.76, 5,618.79 and 3,621.12 is: 5,443.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,737.76 : 5,618.79 = 3,621.12 : x
  2. Step 2: Convert to fraction form
    3,737.76/5,618.79 = 3,621.12/x
  3. Step 3: Cross multiply
    3,737.76x = 5,618.79 × 3,621.12
  4. Step 4: Simplify right side
    3,737.76x = 20,346,312.84
  5. Step 5: Solve for x
    x = 20,346,312.84/3,737.76
  6. Step 6: Final answer
    x = 5,443.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.