Home / 3,139.60-4,709.43-948.35

Finding the Fourth Proportional to 3,139.60, 4,709.43 and 948.35

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Solution

The fourth proportional to 3,139.60, 4,709.43 and 948.35 is: 1,422.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,139.60 : 4,709.43 = 948.35 : x
  2. Step 2: Convert to fraction form
    3,139.60/4,709.43 = 948.35/x
  3. Step 3: Cross multiply
    3,139.60x = 4,709.43 × 948.35
  4. Step 4: Simplify right side
    3,139.60x = 4,466,187.94
  5. Step 5: Solve for x
    x = 4,466,187.94/3,139.60
  6. Step 6: Final answer
    x = 1,422.53

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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.