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Finding the Fourth Proportional to 1,587.97, 2,190.49 and 924.75

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Solution

The fourth proportional to 1,587.97, 2,190.49 and 924.75 is: 1,275.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,587.97 : 2,190.49 = 924.75 : x
  2. Step 2: Convert to fraction form
    1,587.97/2,190.49 = 924.75/x
  3. Step 3: Cross multiply
    1,587.97x = 2,190.49 × 924.75
  4. Step 4: Simplify right side
    1,587.97x = 2,025,655.63
  5. Step 5: Solve for x
    x = 2,025,655.63/1,587.97
  6. Step 6: Final answer
    x = 1,275.63

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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.