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Finding the Fourth Proportional to 1,425.64, 2,137.65 and 592.15

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Solution

The fourth proportional to 1,425.64, 2,137.65 and 592.15 is: 887.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,425.64 : 2,137.65 = 592.15 : x
  2. Step 2: Convert to fraction form
    1,425.64/2,137.65 = 592.15/x
  3. Step 3: Cross multiply
    1,425.64x = 2,137.65 × 592.15
  4. Step 4: Simplify right side
    1,425.64x = 1,265,809.45
  5. Step 5: Solve for x
    x = 1,265,809.45/1,425.64
  6. Step 6: Final answer
    x = 887.89

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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.