Home / 5,218.32-7,820.56-2,874.80

Finding the Fourth Proportional to 5,218.32, 7,820.56 and 2,874.80

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Solution

The fourth proportional to 5,218.32, 7,820.56 and 2,874.80 is: 4,308.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,218.32 : 7,820.56 = 2,874.80 : x
  2. Step 2: Convert to fraction form
    5,218.32/7,820.56 = 2,874.80/x
  3. Step 3: Cross multiply
    5,218.32x = 7,820.56 × 2,874.80
  4. Step 4: Simplify right side
    5,218.32x = 22,482,545.89
  5. Step 5: Solve for x
    x = 22,482,545.89/5,218.32
  6. Step 6: Final answer
    x = 4,308.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.