Home / 1,657.55-2,479.94-1,215.90

Finding the Fourth Proportional to 1,657.55, 2,479.94 and 1,215.90

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Solution

The fourth proportional to 1,657.55, 2,479.94 and 1,215.90 is: 1,819.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,657.55 : 2,479.94 = 1,215.90 : x
  2. Step 2: Convert to fraction form
    1,657.55/2,479.94 = 1,215.90/x
  3. Step 3: Cross multiply
    1,657.55x = 2,479.94 × 1,215.90
  4. Step 4: Simplify right side
    1,657.55x = 3,015,352.97
  5. Step 5: Solve for x
    x = 3,015,352.97/1,657.55
  6. Step 6: Final answer
    x = 1,819.17

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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.