Home / 3,439.14-5,155.54-1,247.34

Finding the Fourth Proportional to 3,439.14, 5,155.54 and 1,247.34

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Solution

The fourth proportional to 3,439.14, 5,155.54 and 1,247.34 is: 1,869.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,439.14 : 5,155.54 = 1,247.34 : x
  2. Step 2: Convert to fraction form
    3,439.14/5,155.54 = 1,247.34/x
  3. Step 3: Cross multiply
    3,439.14x = 5,155.54 × 1,247.34
  4. Step 4: Simplify right side
    3,439.14x = 6,430,711.26
  5. Step 5: Solve for x
    x = 6,430,711.26/3,439.14
  6. Step 6: Final answer
    x = 1,869.86

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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.