Home / 2,431.46-3,355.62-1,988.12

Finding the Fourth Proportional to 2,431.46, 3,355.62 and 1,988.12

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Solution

The fourth proportional to 2,431.46, 3,355.62 and 1,988.12 is: 2,743.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,431.46 : 3,355.62 = 1,988.12 : x
  2. Step 2: Convert to fraction form
    2,431.46/3,355.62 = 1,988.12/x
  3. Step 3: Cross multiply
    2,431.46x = 3,355.62 × 1,988.12
  4. Step 4: Simplify right side
    2,431.46x = 6,671,375.23
  5. Step 5: Solve for x
    x = 6,671,375.23/2,431.46
  6. Step 6: Final answer
    x = 2,743.77

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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.