Home / 3,158.16-4,360.12-2,807.88

Finding the Fourth Proportional to 3,158.16, 4,360.12 and 2,807.88

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Solution

The fourth proportional to 3,158.16, 4,360.12 and 2,807.88 is: 3,876.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,158.16 : 4,360.12 = 2,807.88 : x
  2. Step 2: Convert to fraction form
    3,158.16/4,360.12 = 2,807.88/x
  3. Step 3: Cross multiply
    3,158.16x = 4,360.12 × 2,807.88
  4. Step 4: Simplify right side
    3,158.16x = 12,242,693.75
  5. Step 5: Solve for x
    x = 12,242,693.75/3,158.16
  6. Step 6: Final answer
    x = 3,876.53

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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.