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Finding the Fourth Proportional to 1,512.34, 2,087.01 and 849.19

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Solution

The fourth proportional to 1,512.34, 2,087.01 and 849.19 is: 1,171.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,512.34 : 2,087.01 = 849.19 : x
  2. Step 2: Convert to fraction form
    1,512.34/2,087.01 = 849.19/x
  3. Step 3: Cross multiply
    1,512.34x = 2,087.01 × 849.19
  4. Step 4: Simplify right side
    1,512.34x = 1,772,268.02
  5. Step 5: Solve for x
    x = 1,772,268.02/1,512.34
  6. Step 6: Final answer
    x = 1,171.87

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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.