Home / 3,545.28-5,319.84-1,815.36

Finding the Fourth Proportional to 3,545.28, 5,319.84 and 1,815.36

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Solution

The fourth proportional to 3,545.28, 5,319.84 and 1,815.36 is: 2,724.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,545.28 : 5,319.84 = 1,815.36 : x
  2. Step 2: Convert to fraction form
    3,545.28/5,319.84 = 1,815.36/x
  3. Step 3: Cross multiply
    3,545.28x = 5,319.84 × 1,815.36
  4. Step 4: Simplify right side
    3,545.28x = 9,657,424.74
  5. Step 5: Solve for x
    x = 9,657,424.74/3,545.28
  6. Step 6: Final answer
    x = 2,724.02

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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.