Home / 2,479.14-3,421.20-1,431.18

Finding the Fourth Proportional to 2,479.14, 3,421.20 and 1,431.18

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Solution

The fourth proportional to 2,479.14, 3,421.20 and 1,431.18 is: 1,975.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,479.14 : 3,421.20 = 1,431.18 : x
  2. Step 2: Convert to fraction form
    2,479.14/3,421.20 = 1,431.18/x
  3. Step 3: Cross multiply
    2,479.14x = 3,421.20 × 1,431.18
  4. Step 4: Simplify right side
    2,479.14x = 4,896,353.02
  5. Step 5: Solve for x
    x = 4,896,353.02/2,479.14
  6. Step 6: Final answer
    x = 1,975.02

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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.