Home / 2,479.56-3,421.78-1,402.88

Finding the Fourth Proportional to 2,479.56, 3,421.78 and 1,402.88

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Solution

The fourth proportional to 2,479.56, 3,421.78 and 1,402.88 is: 1,935.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,479.56 : 3,421.78 = 1,402.88 : x
  2. Step 2: Convert to fraction form
    2,479.56/3,421.78 = 1,402.88/x
  3. Step 3: Cross multiply
    2,479.56x = 3,421.78 × 1,402.88
  4. Step 4: Simplify right side
    2,479.56x = 4,800,346.73
  5. Step 5: Solve for x
    x = 4,800,346.73/2,479.56
  6. Step 6: Final answer
    x = 1,935.97

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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.