Home / 5,239.80-7,815.55-4,876.92

Finding the Fourth Proportional to 5,239.80, 7,815.55 and 4,876.92

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Solution

The fourth proportional to 5,239.80, 7,815.55 and 4,876.92 is: 7,274.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,239.80 : 7,815.55 = 4,876.92 : x
  2. Step 2: Convert to fraction form
    5,239.80/7,815.55 = 4,876.92/x
  3. Step 3: Cross multiply
    5,239.80x = 7,815.55 × 4,876.92
  4. Step 4: Simplify right side
    5,239.80x = 38,115,812.11
  5. Step 5: Solve for x
    x = 38,115,812.11/5,239.80
  6. Step 6: Final answer
    x = 7,274.29

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.