Home / 1,432.20-1,976.40-935.04

Finding the Fourth Proportional to 1,432.20, 1,976.40 and 935.04

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Solution

The fourth proportional to 1,432.20, 1,976.40 and 935.04 is: 1,290.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,432.20 : 1,976.40 = 935.04 : x
  2. Step 2: Convert to fraction form
    1,432.20/1,976.40 = 935.04/x
  3. Step 3: Cross multiply
    1,432.20x = 1,976.40 × 935.04
  4. Step 4: Simplify right side
    1,432.20x = 1,848,013.06
  5. Step 5: Solve for x
    x = 1,848,013.06/1,432.20
  6. Step 6: Final answer
    x = 1,290.33

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.