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Finding the Fourth Proportional to 8,913.40, 13,367.40 and 3,718.06

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Solution

The fourth proportional to 8,913.40, 13,367.40 and 3,718.06 is: 5,575.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,913.40 : 13,367.40 = 3,718.06 : x
  2. Step 2: Convert to fraction form
    8,913.40/13,367.40 = 3,718.06/x
  3. Step 3: Cross multiply
    8,913.40x = 13,367.40 × 3,718.06
  4. Step 4: Simplify right side
    8,913.40x = 49,700,795.24
  5. Step 5: Solve for x
    x = 49,700,795.24/8,913.40
  6. Step 6: Final answer
    x = 5,575.96

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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.