Home / 5,278.48-7,915.39-2,812.77

Finding the Fourth Proportional to 5,278.48, 7,915.39 and 2,812.77

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Solution

The fourth proportional to 5,278.48, 7,915.39 and 2,812.77 is: 4,217.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,278.48 : 7,915.39 = 2,812.77 : x
  2. Step 2: Convert to fraction form
    5,278.48/7,915.39 = 2,812.77/x
  3. Step 3: Cross multiply
    5,278.48x = 7,915.39 × 2,812.77
  4. Step 4: Simplify right side
    5,278.48x = 22,264,164.50
  5. Step 5: Solve for x
    x = 22,264,164.50/5,278.48
  6. Step 6: Final answer
    x = 4,217.91

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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.