Home / 2,276.34-3,141.47-1,391.88

Finding the Fourth Proportional to 2,276.34, 3,141.47 and 1,391.88

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Solution

The fourth proportional to 2,276.34, 3,141.47 and 1,391.88 is: 1,920.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,276.34 : 3,141.47 = 1,391.88 : x
  2. Step 2: Convert to fraction form
    2,276.34/3,141.47 = 1,391.88/x
  3. Step 3: Cross multiply
    2,276.34x = 3,141.47 × 1,391.88
  4. Step 4: Simplify right side
    2,276.34x = 4,372,549.26
  5. Step 5: Solve for x
    x = 4,372,549.26/2,276.34
  6. Step 6: Final answer
    x = 1,920.87

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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.