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Finding the Fourth Proportional to 1,398.94, 2,094.32 and 1,007.56

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Solution

The fourth proportional to 1,398.94, 2,094.32 and 1,007.56 is: 1,508.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,398.94 : 2,094.32 = 1,007.56 : x
  2. Step 2: Convert to fraction form
    1,398.94/2,094.32 = 1,007.56/x
  3. Step 3: Cross multiply
    1,398.94x = 2,094.32 × 1,007.56
  4. Step 4: Simplify right side
    1,398.94x = 2,110,153.06
  5. Step 5: Solve for x
    x = 2,110,153.06/1,398.94
  6. Step 6: Final answer
    x = 1,508.39

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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.