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Finding the Fourth Proportional to 1,394.42, 2,091.13 and 1,003.24

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Solution

The fourth proportional to 1,394.42, 2,091.13 and 1,003.24 is: 1,504.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,394.42 : 2,091.13 = 1,003.24 : x
  2. Step 2: Convert to fraction form
    1,394.42/2,091.13 = 1,003.24/x
  3. Step 3: Cross multiply
    1,394.42x = 2,091.13 × 1,003.24
  4. Step 4: Simplify right side
    1,394.42x = 2,097,897.53
  5. Step 5: Solve for x
    x = 2,097,897.53/1,394.42
  6. Step 6: Final answer
    x = 1,504.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.