Home / 10,487.85-15,731.82-3,913.95

Finding the Fourth Proportional to 10,487.85, 15,731.82 and 3,913.95

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Solution

The fourth proportional to 10,487.85, 15,731.82 and 3,913.95 is: 5,870.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,487.85 : 15,731.82 = 3,913.95 : x
  2. Step 2: Convert to fraction form
    10,487.85/15,731.82 = 3,913.95/x
  3. Step 3: Cross multiply
    10,487.85x = 15,731.82 × 3,913.95
  4. Step 4: Simplify right side
    10,487.85x = 61,573,483.15
  5. Step 5: Solve for x
    x = 61,573,483.15/10,487.85
  6. Step 6: Final answer
    x = 5,870.93

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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.