Home / 1,282.29-1,766.43-1,116.21

Finding the Fourth Proportional to 1,282.29, 1,766.43 and 1,116.21

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Solution

The fourth proportional to 1,282.29, 1,766.43 and 1,116.21 is: 1,537.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,282.29 : 1,766.43 = 1,116.21 : x
  2. Step 2: Convert to fraction form
    1,282.29/1,766.43 = 1,116.21/x
  3. Step 3: Cross multiply
    1,282.29x = 1,766.43 × 1,116.21
  4. Step 4: Simplify right side
    1,282.29x = 1,971,706.83
  5. Step 5: Solve for x
    x = 1,971,706.83/1,282.29
  6. Step 6: Final answer
    x = 1,537.65

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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.