Home / 2,255.90-3,123.51-2,140.70

Finding the Fourth Proportional to 2,255.90, 3,123.51 and 2,140.70

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Solution

The fourth proportional to 2,255.90, 3,123.51 and 2,140.70 is: 2,964.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,255.90 : 3,123.51 = 2,140.70 : x
  2. Step 2: Convert to fraction form
    2,255.90/3,123.51 = 2,140.70/x
  3. Step 3: Cross multiply
    2,255.90x = 3,123.51 × 2,140.70
  4. Step 4: Simplify right side
    2,255.90x = 6,686,497.86
  5. Step 5: Solve for x
    x = 6,686,497.86/2,255.90
  6. Step 6: Final answer
    x = 2,964.00

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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.