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Finding the Fourth Proportional to 1,541.67, 2,127.51 and 843.06

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Solution

The fourth proportional to 1,541.67, 2,127.51 and 843.06 is: 1,163.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,541.67 : 2,127.51 = 843.06 : x
  2. Step 2: Convert to fraction form
    1,541.67/2,127.51 = 843.06/x
  3. Step 3: Cross multiply
    1,541.67x = 2,127.51 × 843.06
  4. Step 4: Simplify right side
    1,541.67x = 1,793,618.58
  5. Step 5: Solve for x
    x = 1,793,618.58/1,541.67
  6. Step 6: Final answer
    x = 1,163.43

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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.