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Finding the Fourth Proportional to 1,486.17, 2,049.98 and 896.56

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Solution

The fourth proportional to 1,486.17, 2,049.98 and 896.56 is: 1,236.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,486.17 : 2,049.98 = 896.56 : x
  2. Step 2: Convert to fraction form
    1,486.17/2,049.98 = 896.56/x
  3. Step 3: Cross multiply
    1,486.17x = 2,049.98 × 896.56
  4. Step 4: Simplify right side
    1,486.17x = 1,837,920.46
  5. Step 5: Solve for x
    x = 1,837,920.46/1,486.17
  6. Step 6: Final answer
    x = 1,236.68

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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.