Home / 1,587.31-2,190.30-924.07

Finding the Fourth Proportional to 1,587.31, 2,190.30 and 924.07

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Solution

The fourth proportional to 1,587.31, 2,190.30 and 924.07 is: 1,275.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,587.31 : 2,190.30 = 924.07 : x
  2. Step 2: Convert to fraction form
    1,587.31/2,190.30 = 924.07/x
  3. Step 3: Cross multiply
    1,587.31x = 2,190.30 × 924.07
  4. Step 4: Simplify right side
    1,587.31x = 2,023,990.52
  5. Step 5: Solve for x
    x = 2,023,990.52/1,587.31
  6. Step 6: Final answer
    x = 1,275.11

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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.