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Finding the Fourth Proportional to 1,363.86, 1,882.42 and 804.13

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Solution

The fourth proportional to 1,363.86, 1,882.42 and 804.13 is: 1,109.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,363.86 : 1,882.42 = 804.13 : x
  2. Step 2: Convert to fraction form
    1,363.86/1,882.42 = 804.13/x
  3. Step 3: Cross multiply
    1,363.86x = 1,882.42 × 804.13
  4. Step 4: Simplify right side
    1,363.86x = 1,513,703.68
  5. Step 5: Solve for x
    x = 1,513,703.68/1,363.86
  6. Step 6: Final answer
    x = 1,109.87

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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.