Home / 3,123.19-4,690.86-2,298.21

Finding the Fourth Proportional to 3,123.19, 4,690.86 and 2,298.21

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Solution

The fourth proportional to 3,123.19, 4,690.86 and 2,298.21 is: 3,451.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,123.19 : 4,690.86 = 2,298.21 : x
  2. Step 2: Convert to fraction form
    3,123.19/4,690.86 = 2,298.21/x
  3. Step 3: Cross multiply
    3,123.19x = 4,690.86 × 2,298.21
  4. Step 4: Simplify right side
    3,123.19x = 10,780,581.36
  5. Step 5: Solve for x
    x = 10,780,581.36/3,123.19
  6. Step 6: Final answer
    x = 3,451.79

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.