Home / 1,272.69-1,753.28-1,047.16

Finding the Fourth Proportional to 1,272.69, 1,753.28 and 1,047.16

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Solution

The fourth proportional to 1,272.69, 1,753.28 and 1,047.16 is: 1,442.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,272.69 : 1,753.28 = 1,047.16 : x
  2. Step 2: Convert to fraction form
    1,272.69/1,753.28 = 1,047.16/x
  3. Step 3: Cross multiply
    1,272.69x = 1,753.28 × 1,047.16
  4. Step 4: Simplify right side
    1,272.69x = 1,835,950.68
  5. Step 5: Solve for x
    x = 1,835,950.68/1,272.69
  6. Step 6: Final answer
    x = 1,442.57

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.