Home / 2,087.52-2,881.92-1,425.36

Finding the Fourth Proportional to 2,087.52, 2,881.92 and 1,425.36

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Solution

The fourth proportional to 2,087.52, 2,881.92 and 1,425.36 is: 1,967.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,087.52 : 2,881.92 = 1,425.36 : x
  2. Step 2: Convert to fraction form
    2,087.52/2,881.92 = 1,425.36/x
  3. Step 3: Cross multiply
    2,087.52x = 2,881.92 × 1,425.36
  4. Step 4: Simplify right side
    2,087.52x = 4,107,773.49
  5. Step 5: Solve for x
    x = 4,107,773.49/2,087.52
  6. Step 6: Final answer
    x = 1,967.78

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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.