Home / 3,639.15-5,459.13-1,330.11

Finding the Fourth Proportional to 3,639.15, 5,459.13 and 1,330.11

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Solution

The fourth proportional to 3,639.15, 5,459.13 and 1,330.11 is: 1,995.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,639.15 : 5,459.13 = 1,330.11 : x
  2. Step 2: Convert to fraction form
    3,639.15/5,459.13 = 1,330.11/x
  3. Step 3: Cross multiply
    3,639.15x = 5,459.13 × 1,330.11
  4. Step 4: Simplify right side
    3,639.15x = 7,261,243.40
  5. Step 5: Solve for x
    x = 7,261,243.40/3,639.15
  6. Step 6: Final answer
    x = 1,995.31

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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.