Home / 3,012.40-4,156.68-1,964.80

Finding the Fourth Proportional to 3,012.40, 4,156.68 and 1,964.80

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Solution

The fourth proportional to 3,012.40, 4,156.68 and 1,964.80 is: 2,711.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,012.40 : 4,156.68 = 1,964.80 : x
  2. Step 2: Convert to fraction form
    3,012.40/4,156.68 = 1,964.80/x
  3. Step 3: Cross multiply
    3,012.40x = 4,156.68 × 1,964.80
  4. Step 4: Simplify right side
    3,012.40x = 8,167,044.86
  5. Step 5: Solve for x
    x = 8,167,044.86/3,012.40
  6. Step 6: Final answer
    x = 2,711.14

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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.