Home / 2,318.70-3,478.35-1,149.30

Finding the Fourth Proportional to 2,318.70, 3,478.35 and 1,149.30

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Solution

The fourth proportional to 2,318.70, 3,478.35 and 1,149.30 is: 1,724.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,318.70 : 3,478.35 = 1,149.30 : x
  2. Step 2: Convert to fraction form
    2,318.70/3,478.35 = 1,149.30/x
  3. Step 3: Cross multiply
    2,318.70x = 3,478.35 × 1,149.30
  4. Step 4: Simplify right side
    2,318.70x = 3,997,667.66
  5. Step 5: Solve for x
    x = 3,997,667.66/2,318.70
  6. Step 6: Final answer
    x = 1,724.10

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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.