Home / 2,328.62-3,213.45-1,280.70

Finding the Fourth Proportional to 2,328.62, 3,213.45 and 1,280.70

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Solution

The fourth proportional to 2,328.62, 3,213.45 and 1,280.70 is: 1,767.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,328.62 : 3,213.45 = 1,280.70 : x
  2. Step 2: Convert to fraction form
    2,328.62/3,213.45 = 1,280.70/x
  3. Step 3: Cross multiply
    2,328.62x = 3,213.45 × 1,280.70
  4. Step 4: Simplify right side
    2,328.62x = 4,115,465.42
  5. Step 5: Solve for x
    x = 4,115,465.42/2,328.62
  6. Step 6: Final answer
    x = 1,767.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.