Home / 1,449.17-2,176.67-865.32

Finding the Fourth Proportional to 1,449.17, 2,176.67 and 865.32

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Solution

The fourth proportional to 1,449.17, 2,176.67 and 865.32 is: 1,299.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,449.17 : 2,176.67 = 865.32 : x
  2. Step 2: Convert to fraction form
    1,449.17/2,176.67 = 865.32/x
  3. Step 3: Cross multiply
    1,449.17x = 2,176.67 × 865.32
  4. Step 4: Simplify right side
    1,449.17x = 1,883,516.08
  5. Step 5: Solve for x
    x = 1,883,516.08/1,449.17
  6. Step 6: Final answer
    x = 1,299.72

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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.