Home / 1,456.12-2,184.80-806.12

Finding the Fourth Proportional to 1,456.12, 2,184.80 and 806.12

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Solution

The fourth proportional to 1,456.12, 2,184.80 and 806.12 is: 1,209.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,456.12 : 2,184.80 = 806.12 : x
  2. Step 2: Convert to fraction form
    1,456.12/2,184.80 = 806.12/x
  3. Step 3: Cross multiply
    1,456.12x = 2,184.80 × 806.12
  4. Step 4: Simplify right side
    1,456.12x = 1,761,210.98
  5. Step 5: Solve for x
    x = 1,761,210.98/1,456.12
  6. Step 6: Final answer
    x = 1,209.52

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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.