Home / 3,060.72-4,220.10-2,587.78

Finding the Fourth Proportional to 3,060.72, 4,220.10 and 2,587.78

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Solution

The fourth proportional to 3,060.72, 4,220.10 and 2,587.78 is: 3,568.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,060.72 : 4,220.10 = 2,587.78 : x
  2. Step 2: Convert to fraction form
    3,060.72/4,220.10 = 2,587.78/x
  3. Step 3: Cross multiply
    3,060.72x = 4,220.10 × 2,587.78
  4. Step 4: Simplify right side
    3,060.72x = 10,920,695.65
  5. Step 5: Solve for x
    x = 10,920,695.65/3,060.72
  6. Step 6: Final answer
    x = 3,568.02

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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.