Home / 1,647.28-2,273.34-948.76

Finding the Fourth Proportional to 1,647.28, 2,273.34 and 948.76

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Solution

The fourth proportional to 1,647.28, 2,273.34 and 948.76 is: 1,309.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,647.28 : 2,273.34 = 948.76 : x
  2. Step 2: Convert to fraction form
    1,647.28/2,273.34 = 948.76/x
  3. Step 3: Cross multiply
    1,647.28x = 2,273.34 × 948.76
  4. Step 4: Simplify right side
    1,647.28x = 2,156,854.06
  5. Step 5: Solve for x
    x = 2,156,854.06/1,647.28
  6. Step 6: Final answer
    x = 1,309.34

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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.