Home / 1,724.74-2,587.08-426.22

Finding the Fourth Proportional to 1,724.74, 2,587.08 and 426.22

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Solution

The fourth proportional to 1,724.74, 2,587.08 and 426.22 is: 639.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,724.74 : 2,587.08 = 426.22 : x
  2. Step 2: Convert to fraction form
    1,724.74/2,587.08 = 426.22/x
  3. Step 3: Cross multiply
    1,724.74x = 2,587.08 × 426.22
  4. Step 4: Simplify right side
    1,724.74x = 1,102,665.24
  5. Step 5: Solve for x
    x = 1,102,665.24/1,724.74
  6. Step 6: Final answer
    x = 639.32

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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.