Home / 1,304.52-1,787.28-1,257.24

Finding the Fourth Proportional to 1,304.52, 1,787.28 and 1,257.24

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Solution

The fourth proportional to 1,304.52, 1,787.28 and 1,257.24 is: 1,722.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,304.52 : 1,787.28 = 1,257.24 : x
  2. Step 2: Convert to fraction form
    1,304.52/1,787.28 = 1,257.24/x
  3. Step 3: Cross multiply
    1,304.52x = 1,787.28 × 1,257.24
  4. Step 4: Simplify right side
    1,304.52x = 2,247,039.91
  5. Step 5: Solve for x
    x = 2,247,039.91/1,304.52
  6. Step 6: Final answer
    x = 1,722.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.