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Finding the Fourth Proportional to 1,462.80, 2,191.80 and 1,246.80

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Solution

The fourth proportional to 1,462.80, 2,191.80 and 1,246.80 is: 1,868.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,462.80 : 2,191.80 = 1,246.80 : x
  2. Step 2: Convert to fraction form
    1,462.80/2,191.80 = 1,246.80/x
  3. Step 3: Cross multiply
    1,462.80x = 2,191.80 × 1,246.80
  4. Step 4: Simplify right side
    1,462.80x = 2,732,736.24
  5. Step 5: Solve for x
    x = 2,732,736.24/1,462.80
  6. Step 6: Final answer
    x = 1,868.15

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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.