Home / 5,278.88-7,915.64-1,767.64

Finding the Fourth Proportional to 5,278.88, 7,915.64 and 1,767.64

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Solution

The fourth proportional to 5,278.88, 7,915.64 and 1,767.64 is: 2,650.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,278.88 : 7,915.64 = 1,767.64 : x
  2. Step 2: Convert to fraction form
    5,278.88/7,915.64 = 1,767.64/x
  3. Step 3: Cross multiply
    5,278.88x = 7,915.64 × 1,767.64
  4. Step 4: Simplify right side
    5,278.88x = 13,992,001.89
  5. Step 5: Solve for x
    x = 13,992,001.89/5,278.88
  6. Step 6: Final answer
    x = 2,650.56

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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.