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Finding the Fourth Proportional to 1,560.59, 2,153.54 and 896.97

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Solution

The fourth proportional to 1,560.59, 2,153.54 and 896.97 is: 1,237.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,560.59 : 2,153.54 = 896.97 : x
  2. Step 2: Convert to fraction form
    1,560.59/2,153.54 = 896.97/x
  3. Step 3: Cross multiply
    1,560.59x = 2,153.54 × 896.97
  4. Step 4: Simplify right side
    1,560.59x = 1,931,656.29
  5. Step 5: Solve for x
    x = 1,931,656.29/1,560.59
  6. Step 6: Final answer
    x = 1,237.78

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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.