Home / 2,178.31-3,279.10-1,876.89

Finding the Fourth Proportional to 2,178.31, 3,279.10 and 1,876.89

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Solution

The fourth proportional to 2,178.31, 3,279.10 and 1,876.89 is: 2,825.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,178.31 : 3,279.10 = 1,876.89 : x
  2. Step 2: Convert to fraction form
    2,178.31/3,279.10 = 1,876.89/x
  3. Step 3: Cross multiply
    2,178.31x = 3,279.10 × 1,876.89
  4. Step 4: Simplify right side
    2,178.31x = 6,154,510.00
  5. Step 5: Solve for x
    x = 6,154,510.00/2,178.31
  6. Step 6: Final answer
    x = 2,825.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.