Home / 2,402.60-3,612.80-2,315.12

Finding the Fourth Proportional to 2,402.60, 3,612.80 and 2,315.12

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Solution

The fourth proportional to 2,402.60, 3,612.80 and 2,315.12 is: 3,481.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,402.60 : 3,612.80 = 2,315.12 : x
  2. Step 2: Convert to fraction form
    2,402.60/3,612.80 = 2,315.12/x
  3. Step 3: Cross multiply
    2,402.60x = 3,612.80 × 2,315.12
  4. Step 4: Simplify right side
    2,402.60x = 8,364,065.54
  5. Step 5: Solve for x
    x = 8,364,065.54/2,402.60
  6. Step 6: Final answer
    x = 3,481.26

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.