Home / 2,212.34-3,318.57-913.50

Finding the Fourth Proportional to 2,212.34, 3,318.57 and 913.50

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Solution

The fourth proportional to 2,212.34, 3,318.57 and 913.50 is: 1,370.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,212.34 : 3,318.57 = 913.50 : x
  2. Step 2: Convert to fraction form
    2,212.34/3,318.57 = 913.50/x
  3. Step 3: Cross multiply
    2,212.34x = 3,318.57 × 913.50
  4. Step 4: Simplify right side
    2,212.34x = 3,031,513.70
  5. Step 5: Solve for x
    x = 3,031,513.70/2,212.34
  6. Step 6: Final answer
    x = 1,370.28

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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.