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Finding the Fourth Proportional to 1,560.57, 2,153.56 and 897.37

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Solution

The fourth proportional to 1,560.57, 2,153.56 and 897.37 is: 1,238.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,560.57 : 2,153.56 = 897.37 : x
  2. Step 2: Convert to fraction form
    1,560.57/2,153.56 = 897.37/x
  3. Step 3: Cross multiply
    1,560.57x = 2,153.56 × 897.37
  4. Step 4: Simplify right side
    1,560.57x = 1,932,540.14
  5. Step 5: Solve for x
    x = 1,932,540.14/1,560.57
  6. Step 6: Final answer
    x = 1,238.36

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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.