Home / 5,439.16-8,158.91-1,929.70

Finding the Fourth Proportional to 5,439.16, 8,158.91 and 1,929.70

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Solution

The fourth proportional to 5,439.16, 8,158.91 and 1,929.70 is: 2,894.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,439.16 : 8,158.91 = 1,929.70 : x
  2. Step 2: Convert to fraction form
    5,439.16/8,158.91 = 1,929.70/x
  3. Step 3: Cross multiply
    5,439.16x = 8,158.91 × 1,929.70
  4. Step 4: Simplify right side
    5,439.16x = 15,744,248.63
  5. Step 5: Solve for x
    x = 15,744,248.63/5,439.16
  6. Step 6: Final answer
    x = 2,894.61

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1.5x scale

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.