Home / 1,290.03-1,766.61-1,282.47

Finding the Fourth Proportional to 1,290.03, 1,766.61 and 1,282.47

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Solution

The fourth proportional to 1,290.03, 1,766.61 and 1,282.47 is: 1,756.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,290.03 : 1,766.61 = 1,282.47 : x
  2. Step 2: Convert to fraction form
    1,290.03/1,766.61 = 1,282.47/x
  3. Step 3: Cross multiply
    1,290.03x = 1,766.61 × 1,282.47
  4. Step 4: Simplify right side
    1,290.03x = 2,265,624.33
  5. Step 5: Solve for x
    x = 2,265,624.33/1,290.03
  6. Step 6: Final answer
    x = 1,756.26

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.