Home / 2,292.30-3,438.45-2,138.70

Finding the Fourth Proportional to 2,292.30, 3,438.45 and 2,138.70

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Solution

The fourth proportional to 2,292.30, 3,438.45 and 2,138.70 is: 3,208.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,292.30 : 3,438.45 = 2,138.70 : x
  2. Step 2: Convert to fraction form
    2,292.30/3,438.45 = 2,138.70/x
  3. Step 3: Cross multiply
    2,292.30x = 3,438.45 × 2,138.70
  4. Step 4: Simplify right side
    2,292.30x = 7,353,813.02
  5. Step 5: Solve for x
    x = 7,353,813.02/2,292.30
  6. Step 6: Final answer
    x = 3,208.05

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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.