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Finding the Fourth Proportional to 1,647.66, 2,273.71 and 984.88

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Solution

The fourth proportional to 1,647.66, 2,273.71 and 984.88 is: 1,359.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,647.66 : 2,273.71 = 984.88 : x
  2. Step 2: Convert to fraction form
    1,647.66/2,273.71 = 984.88/x
  3. Step 3: Cross multiply
    1,647.66x = 2,273.71 × 984.88
  4. Step 4: Simplify right side
    1,647.66x = 2,239,331.88
  5. Step 5: Solve for x
    x = 2,239,331.88/1,647.66
  6. Step 6: Final answer
    x = 1,359.10

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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.