Home / 5,156.65-7,116.19-2,798.79

Finding the Fourth Proportional to 5,156.65, 7,116.19 and 2,798.79

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Solution

The fourth proportional to 5,156.65, 7,116.19 and 2,798.79 is: 3,862.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,156.65 : 7,116.19 = 2,798.79 : x
  2. Step 2: Convert to fraction form
    5,156.65/7,116.19 = 2,798.79/x
  3. Step 3: Cross multiply
    5,156.65x = 7,116.19 × 2,798.79
  4. Step 4: Simplify right side
    5,156.65x = 19,916,721.41
  5. Step 5: Solve for x
    x = 19,916,721.41/5,156.65
  6. Step 6: Final answer
    x = 3,862.34

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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.