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Finding the Fourth Proportional to 1,512.57, 2,087.34 and 883.53

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Solution

The fourth proportional to 1,512.57, 2,087.34 and 883.53 is: 1,219.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,512.57 : 2,087.34 = 883.53 : x
  2. Step 2: Convert to fraction form
    1,512.57/2,087.34 = 883.53/x
  3. Step 3: Cross multiply
    1,512.57x = 2,087.34 × 883.53
  4. Step 4: Simplify right side
    1,512.57x = 1,844,227.51
  5. Step 5: Solve for x
    x = 1,844,227.51/1,512.57
  6. Step 6: Final answer
    x = 1,219.27

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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.