Home / 3,612.47-4,989.32-2,431.49

Finding the Fourth Proportional to 3,612.47, 4,989.32 and 2,431.49

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Solution

The fourth proportional to 3,612.47, 4,989.32 and 2,431.49 is: 3,358.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,612.47 : 4,989.32 = 2,431.49 : x
  2. Step 2: Convert to fraction form
    3,612.47/4,989.32 = 2,431.49/x
  3. Step 3: Cross multiply
    3,612.47x = 4,989.32 × 2,431.49
  4. Step 4: Simplify right side
    3,612.47x = 12,131,444.58
  5. Step 5: Solve for x
    x = 12,131,444.58/3,612.47
  6. Step 6: Final answer
    x = 3,358.22

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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.