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Finding the Fourth Proportional to 1,769.28, 2,441.53 and 983.38

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Solution

The fourth proportional to 1,769.28, 2,441.53 and 983.38 is: 1,357.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,769.28 : 2,441.53 = 983.38 : x
  2. Step 2: Convert to fraction form
    1,769.28/2,441.53 = 983.38/x
  3. Step 3: Cross multiply
    1,769.28x = 2,441.53 × 983.38
  4. Step 4: Simplify right side
    1,769.28x = 2,400,934.65
  5. Step 5: Solve for x
    x = 2,400,934.65/1,769.28
  6. Step 6: Final answer
    x = 1,357.02

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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.