Home / 10,902.90-16,356.76-3,977.40

Finding the Fourth Proportional to 10,902.90, 16,356.76 and 3,977.40

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Solution

The fourth proportional to 10,902.90, 16,356.76 and 3,977.40 is: 5,966.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,902.90 : 16,356.76 = 3,977.40 : x
  2. Step 2: Convert to fraction form
    10,902.90/16,356.76 = 3,977.40/x
  3. Step 3: Cross multiply
    10,902.90x = 16,356.76 × 3,977.40
  4. Step 4: Simplify right side
    10,902.90x = 65,057,377.22
  5. Step 5: Solve for x
    x = 65,057,377.22/10,902.90
  6. Step 6: Final answer
    x = 5,966.98

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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.