Home / 3,439.07-5,155.46-1,247.31

Finding the Fourth Proportional to 3,439.07, 5,155.46 and 1,247.31

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Solution

The fourth proportional to 3,439.07, 5,155.46 and 1,247.31 is: 1,869.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,439.07 : 5,155.46 = 1,247.31 : x
  2. Step 2: Convert to fraction form
    3,439.07/5,155.46 = 1,247.31/x
  3. Step 3: Cross multiply
    3,439.07x = 5,155.46 × 1,247.31
  4. Step 4: Simplify right side
    3,439.07x = 6,430,435.92
  5. Step 5: Solve for x
    x = 6,430,435.92/3,439.07
  6. Step 6: Final answer
    x = 1,869.82

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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.