Home / 2,234.90-3,084.10-1,290.68

Finding the Fourth Proportional to 2,234.90, 3,084.10 and 1,290.68

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Solution

The fourth proportional to 2,234.90, 3,084.10 and 1,290.68 is: 1,781.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,234.90 : 3,084.10 = 1,290.68 : x
  2. Step 2: Convert to fraction form
    2,234.90/3,084.10 = 1,290.68/x
  3. Step 3: Cross multiply
    2,234.90x = 3,084.10 × 1,290.68
  4. Step 4: Simplify right side
    2,234.90x = 3,980,586.19
  5. Step 5: Solve for x
    x = 3,980,586.19/2,234.90
  6. Step 6: Final answer
    x = 1,781.10

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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.