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Finding the Fourth Proportional to 1,784.19, 2,462.18 and 998.42

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Solution

The fourth proportional to 1,784.19, 2,462.18 and 998.42 is: 1,377.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,784.19 : 2,462.18 = 998.42 : x
  2. Step 2: Convert to fraction form
    1,784.19/2,462.18 = 998.42/x
  3. Step 3: Cross multiply
    1,784.19x = 2,462.18 × 998.42
  4. Step 4: Simplify right side
    1,784.19x = 2,458,289.76
  5. Step 5: Solve for x
    x = 2,458,289.76/1,784.19
  6. Step 6: Final answer
    x = 1,377.82

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Double scale
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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.