Home / 3,520.65-5,280.58-888.15

Finding the Fourth Proportional to 3,520.65, 5,280.58 and 888.15

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Solution

The fourth proportional to 3,520.65, 5,280.58 and 888.15 is: 1,332.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,520.65 : 5,280.58 = 888.15 : x
  2. Step 2: Convert to fraction form
    3,520.65/5,280.58 = 888.15/x
  3. Step 3: Cross multiply
    3,520.65x = 5,280.58 × 888.15
  4. Step 4: Simplify right side
    3,520.65x = 4,689,947.13
  5. Step 5: Solve for x
    x = 4,689,947.13/3,520.65
  6. Step 6: Final answer
    x = 1,332.13

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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.