Home / 2,521.20-3,479.13-1,402.12

Finding the Fourth Proportional to 2,521.20, 3,479.13 and 1,402.12

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Solution

The fourth proportional to 2,521.20, 3,479.13 and 1,402.12 is: 1,934.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,521.20 : 3,479.13 = 1,402.12 : x
  2. Step 2: Convert to fraction form
    2,521.20/3,479.13 = 1,402.12/x
  3. Step 3: Cross multiply
    2,521.20x = 3,479.13 × 1,402.12
  4. Step 4: Simplify right side
    2,521.20x = 4,878,157.76
  5. Step 5: Solve for x
    x = 4,878,157.76/2,521.20
  6. Step 6: Final answer
    x = 1,934.86

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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.