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Finding the Fourth Proportional to 5,607.42, 8,344.94 and 5,420.55

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Solution

The fourth proportional to 5,607.42, 8,344.94 and 5,420.55 is: 8,066.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,607.42 : 8,344.94 = 5,420.55 : x
  2. Step 2: Convert to fraction form
    5,607.42/8,344.94 = 5,420.55/x
  3. Step 3: Cross multiply
    5,607.42x = 8,344.94 × 5,420.55
  4. Step 4: Simplify right side
    5,607.42x = 45,234,168.71
  5. Step 5: Solve for x
    x = 45,234,168.71/5,607.42
  6. Step 6: Final answer
    x = 8,066.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.