Home / 2,631.57-3,628.85-2,259.78

Finding the Fourth Proportional to 2,631.57, 3,628.85 and 2,259.78

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Solution

The fourth proportional to 2,631.57, 3,628.85 and 2,259.78 is: 3,116.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,631.57 : 3,628.85 = 2,259.78 : x
  2. Step 2: Convert to fraction form
    2,631.57/3,628.85 = 2,259.78/x
  3. Step 3: Cross multiply
    2,631.57x = 3,628.85 × 2,259.78
  4. Step 4: Simplify right side
    2,631.57x = 8,200,391.35
  5. Step 5: Solve for x
    x = 8,200,391.35/2,631.57
  6. Step 6: Final answer
    x = 3,116.16

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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.