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Finding the Fourth Proportional to 2,678.18, 4,016.54 and 803.63

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Solution

The fourth proportional to 2,678.18, 4,016.54 and 803.63 is: 1,205.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,678.18 : 4,016.54 = 803.63 : x
  2. Step 2: Convert to fraction form
    2,678.18/4,016.54 = 803.63/x
  3. Step 3: Cross multiply
    2,678.18x = 4,016.54 × 803.63
  4. Step 4: Simplify right side
    2,678.18x = 3,227,812.04
  5. Step 5: Solve for x
    x = 3,227,812.04/2,678.18
  6. Step 6: Final answer
    x = 1,205.23

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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.