Home / 5,123.25-7,070.76-3,107.46

Finding the Fourth Proportional to 5,123.25, 7,070.76 and 3,107.46

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Solution

The fourth proportional to 5,123.25, 7,070.76 and 3,107.46 is: 4,288.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,123.25 : 7,070.76 = 3,107.46 : x
  2. Step 2: Convert to fraction form
    5,123.25/7,070.76 = 3,107.46/x
  3. Step 3: Cross multiply
    5,123.25x = 7,070.76 × 3,107.46
  4. Step 4: Simplify right side
    5,123.25x = 21,972,130.38
  5. Step 5: Solve for x
    x = 21,972,130.38/5,123.25
  6. Step 6: Final answer
    x = 4,288.71

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Half scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.