Home / 3,123.13-4,308.44-1,863.46

Finding the Fourth Proportional to 3,123.13, 4,308.44 and 1,863.46

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Solution

The fourth proportional to 3,123.13, 4,308.44 and 1,863.46 is: 2,570.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,123.13 : 4,308.44 = 1,863.46 : x
  2. Step 2: Convert to fraction form
    3,123.13/4,308.44 = 1,863.46/x
  3. Step 3: Cross multiply
    3,123.13x = 4,308.44 × 1,863.46
  4. Step 4: Simplify right side
    3,123.13x = 8,028,605.60
  5. Step 5: Solve for x
    x = 8,028,605.60/3,123.13
  6. Step 6: Final answer
    x = 2,570.70

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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.