Home / 8,919.29-13,376.90-3,985.71

Finding the Fourth Proportional to 8,919.29, 13,376.90 and 3,985.71

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Solution

The fourth proportional to 8,919.29, 13,376.90 and 3,985.71 is: 5,977.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,919.29 : 13,376.90 = 3,985.71 : x
  2. Step 2: Convert to fraction form
    8,919.29/13,376.90 = 3,985.71/x
  3. Step 3: Cross multiply
    8,919.29x = 13,376.90 × 3,985.71
  4. Step 4: Simplify right side
    8,919.29x = 53,316,454.06
  5. Step 5: Solve for x
    x = 53,316,454.06/8,919.29
  6. Step 6: Final answer
    x = 5,977.66

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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.