Home / 5,167.76-7,751.64-1,272.17

Finding the Fourth Proportional to 5,167.76, 7,751.64 and 1,272.17

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Solution

The fourth proportional to 5,167.76, 7,751.64 and 1,272.17 is: 1,908.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,167.76 : 7,751.64 = 1,272.17 : x
  2. Step 2: Convert to fraction form
    5,167.76/7,751.64 = 1,272.17/x
  3. Step 3: Cross multiply
    5,167.76x = 7,751.64 × 1,272.17
  4. Step 4: Simplify right side
    5,167.76x = 9,861,403.86
  5. Step 5: Solve for x
    x = 9,861,403.86/5,167.76
  6. Step 6: Final answer
    x = 1,908.26

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1.5x scale

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.