Home / 3,439.91-5,155.83-1,587.08

Finding the Fourth Proportional to 3,439.91, 5,155.83 and 1,587.08

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Solution

The fourth proportional to 3,439.91, 5,155.83 and 1,587.08 is: 2,378.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,439.91 : 5,155.83 = 1,587.08 : x
  2. Step 2: Convert to fraction form
    3,439.91/5,155.83 = 1,587.08/x
  3. Step 3: Cross multiply
    3,439.91x = 5,155.83 × 1,587.08
  4. Step 4: Simplify right side
    3,439.91x = 8,182,714.68
  5. Step 5: Solve for x
    x = 8,182,714.68/3,439.91
  6. Step 6: Final answer
    x = 2,378.76

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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.