Home / 2,819.60-3,888.30-2,542.72

Finding the Fourth Proportional to 2,819.60, 3,888.30 and 2,542.72

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Solution

The fourth proportional to 2,819.60, 3,888.30 and 2,542.72 is: 3,506.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,819.60 : 3,888.30 = 2,542.72 : x
  2. Step 2: Convert to fraction form
    2,819.60/3,888.30 = 2,542.72/x
  3. Step 3: Cross multiply
    2,819.60x = 3,888.30 × 2,542.72
  4. Step 4: Simplify right side
    2,819.60x = 9,886,858.18
  5. Step 5: Solve for x
    x = 9,886,858.18/2,819.60
  6. Step 6: Final answer
    x = 3,506.48

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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.