Home / 6,612.72-9,123.60-3,780

Finding the Fourth Proportional to 6,612.72, 9,123.60 and 3,780

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Solution

The fourth proportional to 6,612.72, 9,123.60 and 3,780 is: 5,215.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,612.72 : 9,123.60 = 3,780 : x
  2. Step 2: Convert to fraction form
    6,612.72/9,123.60 = 3,780/x
  3. Step 3: Cross multiply
    6,612.72x = 9,123.60 × 3,780
  4. Step 4: Simplify right side
    6,612.72x = 34,487,208
  5. Step 5: Solve for x
    x = 34,487,208/6,612.72
  6. Step 6: Final answer
    x = 5,215.28

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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.