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Finding the Fourth Proportional to 1,340.46, 1,851.03 and 843.93

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Solution

The fourth proportional to 1,340.46, 1,851.03 and 843.93 is: 1,165.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,340.46 : 1,851.03 = 843.93 : x
  2. Step 2: Convert to fraction form
    1,340.46/1,851.03 = 843.93/x
  3. Step 3: Cross multiply
    1,340.46x = 1,851.03 × 843.93
  4. Step 4: Simplify right side
    1,340.46x = 1,562,139.75
  5. Step 5: Solve for x
    x = 1,562,139.75/1,340.46
  6. Step 6: Final answer
    x = 1,165.38

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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.