Home / 1,587.66-2,381.22-971.25

Finding the Fourth Proportional to 1,587.66, 2,381.22 and 971.25

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Solution

The fourth proportional to 1,587.66, 2,381.22 and 971.25 is: 1,456.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,587.66 : 2,381.22 = 971.25 : x
  2. Step 2: Convert to fraction form
    1,587.66/2,381.22 = 971.25/x
  3. Step 3: Cross multiply
    1,587.66x = 2,381.22 × 971.25
  4. Step 4: Simplify right side
    1,587.66x = 2,312,759.93
  5. Step 5: Solve for x
    x = 2,312,759.93/1,587.66
  6. Step 6: Final answer
    x = 1,456.71

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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.