Home / 2,986.38-4,479.57-1,038.60

Finding the Fourth Proportional to 2,986.38, 4,479.57 and 1,038.60

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Solution

The fourth proportional to 2,986.38, 4,479.57 and 1,038.60 is: 1,557.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,986.38 : 4,479.57 = 1,038.60 : x
  2. Step 2: Convert to fraction form
    2,986.38/4,479.57 = 1,038.60/x
  3. Step 3: Cross multiply
    2,986.38x = 4,479.57 × 1,038.60
  4. Step 4: Simplify right side
    2,986.38x = 4,652,481.40
  5. Step 5: Solve for x
    x = 4,652,481.40/2,986.38
  6. Step 6: Final answer
    x = 1,557.90

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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.