Home / 2,974.83-4,104.56-1,780.20

Finding the Fourth Proportional to 2,974.83, 4,104.56 and 1,780.20

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Solution

The fourth proportional to 2,974.83, 4,104.56 and 1,780.20 is: 2,456.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,974.83 : 4,104.56 = 1,780.20 : x
  2. Step 2: Convert to fraction form
    2,974.83/4,104.56 = 1,780.20/x
  3. Step 3: Cross multiply
    2,974.83x = 4,104.56 × 1,780.20
  4. Step 4: Simplify right side
    2,974.83x = 7,306,928.81
  5. Step 5: Solve for x
    x = 7,306,928.81/2,974.83
  6. Step 6: Final answer
    x = 2,456.25

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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.