Home / 7,876.80-10,869.66-5,040.18

Finding the Fourth Proportional to 7,876.80, 10,869.66 and 5,040.18

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Solution

The fourth proportional to 7,876.80, 10,869.66 and 5,040.18 is: 6,955.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,876.80 : 10,869.66 = 5,040.18 : x
  2. Step 2: Convert to fraction form
    7,876.80/10,869.66 = 5,040.18/x
  3. Step 3: Cross multiply
    7,876.80x = 10,869.66 × 5,040.18
  4. Step 4: Simplify right side
    7,876.80x = 54,785,042.94
  5. Step 5: Solve for x
    x = 54,785,042.94/7,876.80
  6. Step 6: Final answer
    x = 6,955.24

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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.