Home / 3,612.09-4,988.79-2,431.11

Finding the Fourth Proportional to 3,612.09, 4,988.79 and 2,431.11

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Solution

The fourth proportional to 3,612.09, 4,988.79 and 2,431.11 is: 3,357.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,612.09 : 4,988.79 = 2,431.11 : x
  2. Step 2: Convert to fraction form
    3,612.09/4,988.79 = 2,431.11/x
  3. Step 3: Cross multiply
    3,612.09x = 4,988.79 × 2,431.11
  4. Step 4: Simplify right side
    3,612.09x = 12,128,315.96
  5. Step 5: Solve for x
    x = 12,128,315.96/3,612.09
  6. Step 6: Final answer
    x = 3,357.70

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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.