Home / 2,867.66-3,957.53-2,158.23

Finding the Fourth Proportional to 2,867.66, 3,957.53 and 2,158.23

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Solution

The fourth proportional to 2,867.66, 3,957.53 and 2,158.23 is: 2,978.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,867.66 : 3,957.53 = 2,158.23 : x
  2. Step 2: Convert to fraction form
    2,867.66/3,957.53 = 2,158.23/x
  3. Step 3: Cross multiply
    2,867.66x = 3,957.53 × 2,158.23
  4. Step 4: Simplify right side
    2,867.66x = 8,541,259.97
  5. Step 5: Solve for x
    x = 8,541,259.97/2,867.66
  6. Step 6: Final answer
    x = 2,978.48

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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.