Home / 3,617.90-5,431.78-1,864.34

Finding the Fourth Proportional to 3,617.90, 5,431.78 and 1,864.34

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Solution

The fourth proportional to 3,617.90, 5,431.78 and 1,864.34 is: 2,799.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,617.90 : 5,431.78 = 1,864.34 : x
  2. Step 2: Convert to fraction form
    3,617.90/5,431.78 = 1,864.34/x
  3. Step 3: Cross multiply
    3,617.90x = 5,431.78 × 1,864.34
  4. Step 4: Simplify right side
    3,617.90x = 10,126,684.73
  5. Step 5: Solve for x
    x = 10,126,684.73/3,617.90
  6. Step 6: Final answer
    x = 2,799.05

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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.