Home / 2,391.56-3,280.26-2,278.16

Finding the Fourth Proportional to 2,391.56, 3,280.26 and 2,278.16

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Solution

The fourth proportional to 2,391.56, 3,280.26 and 2,278.16 is: 3,124.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,391.56 : 3,280.26 = 2,278.16 : x
  2. Step 2: Convert to fraction form
    2,391.56/3,280.26 = 2,278.16/x
  3. Step 3: Cross multiply
    2,391.56x = 3,280.26 × 2,278.16
  4. Step 4: Simplify right side
    2,391.56x = 7,472,957.12
  5. Step 5: Solve for x
    x = 7,472,957.12/2,391.56
  6. Step 6: Final answer
    x = 3,124.72

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.