Home / 1,722.13-2,581.61-626.20

Finding the Fourth Proportional to 1,722.13, 2,581.61 and 626.20

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Solution

The fourth proportional to 1,722.13, 2,581.61 and 626.20 is: 938.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,722.13 : 2,581.61 = 626.20 : x
  2. Step 2: Convert to fraction form
    1,722.13/2,581.61 = 626.20/x
  3. Step 3: Cross multiply
    1,722.13x = 2,581.61 × 626.20
  4. Step 4: Simplify right side
    1,722.13x = 1,616,594.60
  5. Step 5: Solve for x
    x = 1,616,594.60/1,722.13
  6. Step 6: Final answer
    x = 938.72

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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.