Home / 2,116.26-2,920.55-1,276.95

Finding the Fourth Proportional to 2,116.26, 2,920.55 and 1,276.95

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Solution

The fourth proportional to 2,116.26, 2,920.55 and 1,276.95 is: 1,762.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,116.26 : 2,920.55 = 1,276.95 : x
  2. Step 2: Convert to fraction form
    2,116.26/2,920.55 = 1,276.95/x
  3. Step 3: Cross multiply
    2,116.26x = 2,920.55 × 1,276.95
  4. Step 4: Simplify right side
    2,116.26x = 3,729,404.37
  5. Step 5: Solve for x
    x = 3,729,404.37/2,116.26
  6. Step 6: Final answer
    x = 1,762.26

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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.