Home / 8,621.26-12,931.16-3,425.74

Finding the Fourth Proportional to 8,621.26, 12,931.16 and 3,425.74

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Solution

The fourth proportional to 8,621.26, 12,931.16 and 3,425.74 is: 5,138.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,621.26 : 12,931.16 = 3,425.74 : x
  2. Step 2: Convert to fraction form
    8,621.26/12,931.16 = 3,425.74/x
  3. Step 3: Cross multiply
    8,621.26x = 12,931.16 × 3,425.74
  4. Step 4: Simplify right side
    8,621.26x = 44,298,792.06
  5. Step 5: Solve for x
    x = 44,298,792.06/8,621.26
  6. Step 6: Final answer
    x = 5,138.32

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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.