Home / 7,987.61-11,981.42-3,058.76

Finding the Fourth Proportional to 7,987.61, 11,981.42 and 3,058.76

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Solution

The fourth proportional to 7,987.61, 11,981.42 and 3,058.76 is: 4,588.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,987.61 : 11,981.42 = 3,058.76 : x
  2. Step 2: Convert to fraction form
    7,987.61/11,981.42 = 3,058.76/x
  3. Step 3: Cross multiply
    7,987.61x = 11,981.42 × 3,058.76
  4. Step 4: Simplify right side
    7,987.61x = 36,648,288.24
  5. Step 5: Solve for x
    x = 36,648,288.24/7,987.61
  6. Step 6: Final answer
    x = 4,588.14

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Similar ratio
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1.5x scale

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.