Home / 3,326.40-4,990.14-1,247.13

Finding the Fourth Proportional to 3,326.40, 4,990.14 and 1,247.13

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Solution

The fourth proportional to 3,326.40, 4,990.14 and 1,247.13 is: 1,870.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,326.40 : 4,990.14 = 1,247.13 : x
  2. Step 2: Convert to fraction form
    3,326.40/4,990.14 = 1,247.13/x
  3. Step 3: Cross multiply
    3,326.40x = 4,990.14 × 1,247.13
  4. Step 4: Simplify right side
    3,326.40x = 6,223,353.30
  5. Step 5: Solve for x
    x = 6,223,353.30/3,326.40
  6. Step 6: Final answer
    x = 1,870.90

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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.