Home / 5,657.50-7,807.36-3,139.52

Finding the Fourth Proportional to 5,657.50, 7,807.36 and 3,139.52

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Solution

The fourth proportional to 5,657.50, 7,807.36 and 3,139.52 is: 4,332.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,657.50 : 7,807.36 = 3,139.52 : x
  2. Step 2: Convert to fraction form
    5,657.50/7,807.36 = 3,139.52/x
  3. Step 3: Cross multiply
    5,657.50x = 7,807.36 × 3,139.52
  4. Step 4: Simplify right side
    5,657.50x = 24,511,362.87
  5. Step 5: Solve for x
    x = 24,511,362.87/5,657.50
  6. Step 6: Final answer
    x = 4,332.54

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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.