Home / 2,690.19-4,012.65-2,608.20

Finding the Fourth Proportional to 2,690.19, 4,012.65 and 2,608.20

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Solution

The fourth proportional to 2,690.19, 4,012.65 and 2,608.20 is: 3,890.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,690.19 : 4,012.65 = 2,608.20 : x
  2. Step 2: Convert to fraction form
    2,690.19/4,012.65 = 2,608.20/x
  3. Step 3: Cross multiply
    2,690.19x = 4,012.65 × 2,608.20
  4. Step 4: Simplify right side
    2,690.19x = 10,465,793.73
  5. Step 5: Solve for x
    x = 10,465,793.73/2,690.19
  6. Step 6: Final answer
    x = 3,890.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.