Home / 8,621.03-12,931.29-2,381.42

Finding the Fourth Proportional to 8,621.03, 12,931.29 and 2,381.42

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Solution

The fourth proportional to 8,621.03, 12,931.29 and 2,381.42 is: 3,572.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,621.03 : 12,931.29 = 2,381.42 : x
  2. Step 2: Convert to fraction form
    8,621.03/12,931.29 = 2,381.42/x
  3. Step 3: Cross multiply
    8,621.03x = 12,931.29 × 2,381.42
  4. Step 4: Simplify right side
    8,621.03x = 30,794,832.63
  5. Step 5: Solve for x
    x = 30,794,832.63/8,621.03
  6. Step 6: Final answer
    x = 3,572.06

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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.