Home / 3,639.65-5,459.49-1,299.02

Finding the Fourth Proportional to 3,639.65, 5,459.49 and 1,299.02

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Solution

The fourth proportional to 3,639.65, 5,459.49 and 1,299.02 is: 1,948.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,639.65 : 5,459.49 = 1,299.02 : x
  2. Step 2: Convert to fraction form
    3,639.65/5,459.49 = 1,299.02/x
  3. Step 3: Cross multiply
    3,639.65x = 5,459.49 × 1,299.02
  4. Step 4: Simplify right side
    3,639.65x = 7,091,959.40
  5. Step 5: Solve for x
    x = 7,091,959.40/3,639.65
  6. Step 6: Final answer
    x = 1,948.53

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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.