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Finding the Fourth Proportional to 5,478, 7,566.12 and 3,706.53

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Solution

The fourth proportional to 5,478, 7,566.12 and 3,706.53 is: 5,119.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,478 : 7,566.12 = 3,706.53 : x
  2. Step 2: Convert to fraction form
    5,478/7,566.12 = 3,706.53/x
  3. Step 3: Cross multiply
    5,478x = 7,566.12 × 3,706.53
  4. Step 4: Simplify right side
    5,478x = 28,044,050.76
  5. Step 5: Solve for x
    x = 28,044,050.76/5,478
  6. Step 6: Final answer
    x = 5,119.40

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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.