Home / 3,155.40-4,724.88-1,687.37

Finding the Fourth Proportional to 3,155.40, 4,724.88 and 1,687.37

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Solution

The fourth proportional to 3,155.40, 4,724.88 and 1,687.37 is: 2,526.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,155.40 : 4,724.88 = 1,687.37 : x
  2. Step 2: Convert to fraction form
    3,155.40/4,724.88 = 1,687.37/x
  3. Step 3: Cross multiply
    3,155.40x = 4,724.88 × 1,687.37
  4. Step 4: Simplify right side
    3,155.40x = 7,972,620.77
  5. Step 5: Solve for x
    x = 7,972,620.77/3,155.40
  6. Step 6: Final answer
    x = 2,526.66

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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.