Home / 5,143.41-7,715.16-1,247.82

Finding the Fourth Proportional to 5,143.41, 7,715.16 and 1,247.82

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Solution

The fourth proportional to 5,143.41, 7,715.16 and 1,247.82 is: 1,871.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,143.41 : 7,715.16 = 1,247.82 : x
  2. Step 2: Convert to fraction form
    5,143.41/7,715.16 = 1,247.82/x
  3. Step 3: Cross multiply
    5,143.41x = 7,715.16 × 1,247.82
  4. Step 4: Simplify right side
    5,143.41x = 9,627,130.95
  5. Step 5: Solve for x
    x = 9,627,130.95/5,143.41
  6. Step 6: Final answer
    x = 1,871.74

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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.