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Finding the Fourth Proportional to 7,245.16, 10,859.90 and 3,549.88

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Solution

The fourth proportional to 7,245.16, 10,859.90 and 3,549.88 is: 5,320.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,245.16 : 10,859.90 = 3,549.88 : x
  2. Step 2: Convert to fraction form
    7,245.16/10,859.90 = 3,549.88/x
  3. Step 3: Cross multiply
    7,245.16x = 10,859.90 × 3,549.88
  4. Step 4: Simplify right side
    7,245.16x = 38,551,341.81
  5. Step 5: Solve for x
    x = 38,551,341.81/7,245.16
  6. Step 6: Final answer
    x = 5,320.98

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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.