Home / 2,261.68-3,123.40-2,017.20

Finding the Fourth Proportional to 2,261.68, 3,123.40 and 2,017.20

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Solution

The fourth proportional to 2,261.68, 3,123.40 and 2,017.20 is: 2,785.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,261.68 : 3,123.40 = 2,017.20 : x
  2. Step 2: Convert to fraction form
    2,261.68/3,123.40 = 2,017.20/x
  3. Step 3: Cross multiply
    2,261.68x = 3,123.40 × 2,017.20
  4. Step 4: Simplify right side
    2,261.68x = 6,300,522.48
  5. Step 5: Solve for x
    x = 6,300,522.48/2,261.68
  6. Step 6: Final answer
    x = 2,785.77

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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.