Home / 2,276.76-3,141.40-1,392.04

Finding the Fourth Proportional to 2,276.76, 3,141.40 and 1,392.04

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Solution

The fourth proportional to 2,276.76, 3,141.40 and 1,392.04 is: 1,920.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,276.76 : 3,141.40 = 1,392.04 : x
  2. Step 2: Convert to fraction form
    2,276.76/3,141.40 = 1,392.04/x
  3. Step 3: Cross multiply
    2,276.76x = 3,141.40 × 1,392.04
  4. Step 4: Simplify right side
    2,276.76x = 4,372,954.46
  5. Step 5: Solve for x
    x = 4,372,954.46/2,276.76
  6. Step 6: Final answer
    x = 1,920.69

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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.