Home / 8,760.15-13,142.32-2,916.81

Finding the Fourth Proportional to 8,760.15, 13,142.32 and 2,916.81

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Solution

The fourth proportional to 8,760.15, 13,142.32 and 2,916.81 is: 4,375.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,760.15 : 13,142.32 = 2,916.81 : x
  2. Step 2: Convert to fraction form
    8,760.15/13,142.32 = 2,916.81/x
  3. Step 3: Cross multiply
    8,760.15x = 13,142.32 × 2,916.81
  4. Step 4: Simplify right side
    8,760.15x = 38,333,643.11
  5. Step 5: Solve for x
    x = 38,333,643.11/8,760.15
  6. Step 6: Final answer
    x = 4,375.91

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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.