Home / 2,292.60-3,438.90-1,979.40

Finding the Fourth Proportional to 2,292.60, 3,438.90 and 1,979.40

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Solution

The fourth proportional to 2,292.60, 3,438.90 and 1,979.40 is: 2,969.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,292.60 : 3,438.90 = 1,979.40 : x
  2. Step 2: Convert to fraction form
    2,292.60/3,438.90 = 1,979.40/x
  3. Step 3: Cross multiply
    2,292.60x = 3,438.90 × 1,979.40
  4. Step 4: Simplify right side
    2,292.60x = 6,806,958.66
  5. Step 5: Solve for x
    x = 6,806,958.66/2,292.60
  6. Step 6: Final answer
    x = 2,969.10

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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.