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Finding the Fourth Proportional to 1,559.26, 2,151.56 and 896

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Solution

The fourth proportional to 1,559.26, 2,151.56 and 896 is: 1,236.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,559.26 : 2,151.56 = 896 : x
  2. Step 2: Convert to fraction form
    1,559.26/2,151.56 = 896/x
  3. Step 3: Cross multiply
    1,559.26x = 2,151.56 × 896
  4. Step 4: Simplify right side
    1,559.26x = 1,927,797.76
  5. Step 5: Solve for x
    x = 1,927,797.76/1,559.26
  6. Step 6: Final answer
    x = 1,236.35

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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.