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Finding the Fourth Proportional to 1,340.18, 1,847.47 and 940.63

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Solution

The fourth proportional to 1,340.18, 1,847.47 and 940.63 is: 1,296.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,340.18 : 1,847.47 = 940.63 : x
  2. Step 2: Convert to fraction form
    1,340.18/1,847.47 = 940.63/x
  3. Step 3: Cross multiply
    1,340.18x = 1,847.47 × 940.63
  4. Step 4: Simplify right side
    1,340.18x = 1,737,778.74
  5. Step 5: Solve for x
    x = 1,737,778.74/1,340.18
  6. Step 6: Final answer
    x = 1,296.68

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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.