Home / 2,826.30-3,898.34-1,988.76

Finding the Fourth Proportional to 2,826.30, 3,898.34 and 1,988.76

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Solution

The fourth proportional to 2,826.30, 3,898.34 and 1,988.76 is: 2,743.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,826.30 : 3,898.34 = 1,988.76 : x
  2. Step 2: Convert to fraction form
    2,826.30/3,898.34 = 1,988.76/x
  3. Step 3: Cross multiply
    2,826.30x = 3,898.34 × 1,988.76
  4. Step 4: Simplify right side
    2,826.30x = 7,752,862.66
  5. Step 5: Solve for x
    x = 7,752,862.66/2,826.30
  6. Step 6: Final answer
    x = 2,743.11

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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.