Home / 8,621-12,931.24-2,381.39

Finding the Fourth Proportional to 8,621, 12,931.24 and 2,381.39

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Solution

The fourth proportional to 8,621, 12,931.24 and 2,381.39 is: 3,572.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,621 : 12,931.24 = 2,381.39 : x
  2. Step 2: Convert to fraction form
    8,621/12,931.24 = 2,381.39/x
  3. Step 3: Cross multiply
    8,621x = 12,931.24 × 2,381.39
  4. Step 4: Simplify right side
    8,621x = 30,794,325.62
  5. Step 5: Solve for x
    x = 30,794,325.62/8,621
  6. Step 6: Final answer
    x = 3,572.01

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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.