Home / 3,116.10-4,298.31-2,275.80

Finding the Fourth Proportional to 3,116.10, 4,298.31 and 2,275.80

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Solution

The fourth proportional to 3,116.10, 4,298.31 and 2,275.80 is: 3,139.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,116.10 : 4,298.31 = 2,275.80 : x
  2. Step 2: Convert to fraction form
    3,116.10/4,298.31 = 2,275.80/x
  3. Step 3: Cross multiply
    3,116.10x = 4,298.31 × 2,275.80
  4. Step 4: Simplify right side
    3,116.10x = 9,782,093.90
  5. Step 5: Solve for x
    x = 9,782,093.90/3,116.10
  6. Step 6: Final answer
    x = 3,139.21

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Half scale
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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.