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Finding the Fourth Proportional to 1,362.86, 1,881.38 and 803.14

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Solution

The fourth proportional to 1,362.86, 1,881.38 and 803.14 is: 1,108.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,362.86 : 1,881.38 = 803.14 : x
  2. Step 2: Convert to fraction form
    1,362.86/1,881.38 = 803.14/x
  3. Step 3: Cross multiply
    1,362.86x = 1,881.38 × 803.14
  4. Step 4: Simplify right side
    1,362.86x = 1,511,011.53
  5. Step 5: Solve for x
    x = 1,511,011.53/1,362.86
  6. Step 6: Final answer
    x = 1,108.71

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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.