Home / 3,129.90-4,688.58-1,488.04

Finding the Fourth Proportional to 3,129.90, 4,688.58 and 1,488.04

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Solution

The fourth proportional to 3,129.90, 4,688.58 and 1,488.04 is: 2,229.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,129.90 : 4,688.58 = 1,488.04 : x
  2. Step 2: Convert to fraction form
    3,129.90/4,688.58 = 1,488.04/x
  3. Step 3: Cross multiply
    3,129.90x = 4,688.58 × 1,488.04
  4. Step 4: Simplify right side
    3,129.90x = 6,976,794.58
  5. Step 5: Solve for x
    x = 6,976,794.58/3,129.90
  6. Step 6: Final answer
    x = 2,229.08

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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.