Home / 2,425.80-3,346.20-1,638.48

Finding the Fourth Proportional to 2,425.80, 3,346.20 and 1,638.48

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Solution

The fourth proportional to 2,425.80, 3,346.20 and 1,638.48 is: 2,260.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,425.80 : 3,346.20 = 1,638.48 : x
  2. Step 2: Convert to fraction form
    2,425.80/3,346.20 = 1,638.48/x
  3. Step 3: Cross multiply
    2,425.80x = 3,346.20 × 1,638.48
  4. Step 4: Simplify right side
    2,425.80x = 5,482,681.78
  5. Step 5: Solve for x
    x = 5,482,681.78/2,425.80
  6. Step 6: Final answer
    x = 2,260.15

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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.