Home / 3,535.20-5,302.72-938.40

Finding the Fourth Proportional to 3,535.20, 5,302.72 and 938.40

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Solution

The fourth proportional to 3,535.20, 5,302.72 and 938.40 is: 1,407.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,535.20 : 5,302.72 = 938.40 : x
  2. Step 2: Convert to fraction form
    3,535.20/5,302.72 = 938.40/x
  3. Step 3: Cross multiply
    3,535.20x = 5,302.72 × 938.40
  4. Step 4: Simplify right side
    3,535.20x = 4,976,072.45
  5. Step 5: Solve for x
    x = 4,976,072.45/3,535.20
  6. Step 6: Final answer
    x = 1,407.58

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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.