Home / 2,312.62-3,191.45-1,641.60

Finding the Fourth Proportional to 2,312.62, 3,191.45 and 1,641.60

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Solution

The fourth proportional to 2,312.62, 3,191.45 and 1,641.60 is: 2,265.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,312.62 : 3,191.45 = 1,641.60 : x
  2. Step 2: Convert to fraction form
    2,312.62/3,191.45 = 1,641.60/x
  3. Step 3: Cross multiply
    2,312.62x = 3,191.45 × 1,641.60
  4. Step 4: Simplify right side
    2,312.62x = 5,239,084.32
  5. Step 5: Solve for x
    x = 5,239,084.32/2,312.62
  6. Step 6: Final answer
    x = 2,265.43

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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.