Home / 3,121.30-4,294.47-2,370.88

Finding the Fourth Proportional to 3,121.30, 4,294.47 and 2,370.88

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Solution

The fourth proportional to 3,121.30, 4,294.47 and 2,370.88 is: 3,262.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,121.30 : 4,294.47 = 2,370.88 : x
  2. Step 2: Convert to fraction form
    3,121.30/4,294.47 = 2,370.88/x
  3. Step 3: Cross multiply
    3,121.30x = 4,294.47 × 2,370.88
  4. Step 4: Simplify right side
    3,121.30x = 10,181,673.03
  5. Step 5: Solve for x
    x = 10,181,673.03/3,121.30
  6. Step 6: Final answer
    x = 3,262.00

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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.