Home / 3,520.90-5,280.96-888.40

Finding the Fourth Proportional to 3,520.90, 5,280.96 and 888.40

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Solution

The fourth proportional to 3,520.90, 5,280.96 and 888.40 is: 1,332.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,520.90 : 5,280.96 = 888.40 : x
  2. Step 2: Convert to fraction form
    3,520.90/5,280.96 = 888.40/x
  3. Step 3: Cross multiply
    3,520.90x = 5,280.96 × 888.40
  4. Step 4: Simplify right side
    3,520.90x = 4,691,604.86
  5. Step 5: Solve for x
    x = 4,691,604.86/3,520.90
  6. Step 6: Final answer
    x = 1,332.50

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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.