Home / 3,301.40-4,952.10-1,989.20

Finding the Fourth Proportional to 3,301.40, 4,952.10 and 1,989.20

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Solution

The fourth proportional to 3,301.40, 4,952.10 and 1,989.20 is: 2,983.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,301.40 : 4,952.10 = 1,989.20 : x
  2. Step 2: Convert to fraction form
    3,301.40/4,952.10 = 1,989.20/x
  3. Step 3: Cross multiply
    3,301.40x = 4,952.10 × 1,989.20
  4. Step 4: Simplify right side
    3,301.40x = 9,850,717.32
  5. Step 5: Solve for x
    x = 9,850,717.32/3,301.40
  6. Step 6: Final answer
    x = 2,983.80

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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.