Home / 2,383.50-3,289.14-1,388.76

Finding the Fourth Proportional to 2,383.50, 3,289.14 and 1,388.76

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Solution

The fourth proportional to 2,383.50, 3,289.14 and 1,388.76 is: 1,916.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,383.50 : 3,289.14 = 1,388.76 : x
  2. Step 2: Convert to fraction form
    2,383.50/3,289.14 = 1,388.76/x
  3. Step 3: Cross multiply
    2,383.50x = 3,289.14 × 1,388.76
  4. Step 4: Simplify right side
    2,383.50x = 4,567,826.07
  5. Step 5: Solve for x
    x = 4,567,826.07/2,383.50
  6. Step 6: Final answer
    x = 1,916.44

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Half scale
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Double 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.