Home / 1,725.32-2,587.92-426.76

Finding the Fourth Proportional to 1,725.32, 2,587.92 and 426.76

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Solution

The fourth proportional to 1,725.32, 2,587.92 and 426.76 is: 640.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,725.32 : 2,587.92 = 426.76 : x
  2. Step 2: Convert to fraction form
    1,725.32/2,587.92 = 426.76/x
  3. Step 3: Cross multiply
    1,725.32x = 2,587.92 × 426.76
  4. Step 4: Simplify right side
    1,725.32x = 1,104,420.74
  5. Step 5: Solve for x
    x = 1,104,420.74/1,725.32
  6. Step 6: Final answer
    x = 640.13

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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.