Home / 7,335.66-10,123.28-3,978.50

Finding the Fourth Proportional to 7,335.66, 10,123.28 and 3,978.50

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Solution

The fourth proportional to 7,335.66, 10,123.28 and 3,978.50 is: 5,490.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,335.66 : 10,123.28 = 3,978.50 : x
  2. Step 2: Convert to fraction form
    7,335.66/10,123.28 = 3,978.50/x
  3. Step 3: Cross multiply
    7,335.66x = 10,123.28 × 3,978.50
  4. Step 4: Simplify right side
    7,335.66x = 40,275,469.48
  5. Step 5: Solve for x
    x = 40,275,469.48/7,335.66
  6. Step 6: Final answer
    x = 5,490.37

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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.