Home / 2,225.60-3,338.88-926.40

Finding the Fourth Proportional to 2,225.60, 3,338.88 and 926.40

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Solution

The fourth proportional to 2,225.60, 3,338.88 and 926.40 is: 1,389.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,225.60 : 3,338.88 = 926.40 : x
  2. Step 2: Convert to fraction form
    2,225.60/3,338.88 = 926.40/x
  3. Step 3: Cross multiply
    2,225.60x = 3,338.88 × 926.40
  4. Step 4: Simplify right side
    2,225.60x = 3,093,138.43
  5. Step 5: Solve for x
    x = 3,093,138.43/2,225.60
  6. Step 6: Final answer
    x = 1,389.80

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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.