Home / 5,156.70-7,116.04-2,798.79

Finding the Fourth Proportional to 5,156.70, 7,116.04 and 2,798.79

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Solution

The fourth proportional to 5,156.70, 7,116.04 and 2,798.79 is: 3,862.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,156.70 : 7,116.04 = 2,798.79 : x
  2. Step 2: Convert to fraction form
    5,156.70/7,116.04 = 2,798.79/x
  3. Step 3: Cross multiply
    5,156.70x = 7,116.04 × 2,798.79
  4. Step 4: Simplify right side
    5,156.70x = 19,916,301.59
  5. Step 5: Solve for x
    x = 19,916,301.59/5,156.70
  6. Step 6: Final answer
    x = 3,862.22

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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.