Home / 2,325.78-3,488.70-1,299.78

Finding the Fourth Proportional to 2,325.78, 3,488.70 and 1,299.78

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Solution

The fourth proportional to 2,325.78, 3,488.70 and 1,299.78 is: 1,949.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,325.78 : 3,488.70 = 1,299.78 : x
  2. Step 2: Convert to fraction form
    2,325.78/3,488.70 = 1,299.78/x
  3. Step 3: Cross multiply
    2,325.78x = 3,488.70 × 1,299.78
  4. Step 4: Simplify right side
    2,325.78x = 4,534,542.49
  5. Step 5: Solve for x
    x = 4,534,542.49/2,325.78
  6. Step 6: Final answer
    x = 1,949.69

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Half scale
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Double scale
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Similar ratio
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1.5x scale

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.