Home / 5,616.91-8,423.64-1,721.20

Finding the Fourth Proportional to 5,616.91, 8,423.64 and 1,721.20

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Solution

The fourth proportional to 5,616.91, 8,423.64 and 1,721.20 is: 2,581.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,616.91 : 8,423.64 = 1,721.20 : x
  2. Step 2: Convert to fraction form
    5,616.91/8,423.64 = 1,721.20/x
  3. Step 3: Cross multiply
    5,616.91x = 8,423.64 × 1,721.20
  4. Step 4: Simplify right side
    5,616.91x = 14,498,769.17
  5. Step 5: Solve for x
    x = 14,498,769.17/5,616.91
  6. Step 6: Final answer
    x = 2,581.27

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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.