Home / 5,156.57-7,116.08-2,798.71

Finding the Fourth Proportional to 5,156.57, 7,116.08 and 2,798.71

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Solution

The fourth proportional to 5,156.57, 7,116.08 and 2,798.71 is: 3,862.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,156.57 : 7,116.08 = 2,798.71 : x
  2. Step 2: Convert to fraction form
    5,156.57/7,116.08 = 2,798.71/x
  3. Step 3: Cross multiply
    5,156.57x = 7,116.08 × 2,798.71
  4. Step 4: Simplify right side
    5,156.57x = 19,915,844.26
  5. Step 5: Solve for x
    x = 19,915,844.26/5,156.57
  6. Step 6: Final answer
    x = 3,862.23

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1.5x scale

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.