Home / 1,442.61-1,991.75-1,110.42

Finding the Fourth Proportional to 1,442.61, 1,991.75 and 1,110.42

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Solution

The fourth proportional to 1,442.61, 1,991.75 and 1,110.42 is: 1,533.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,442.61 : 1,991.75 = 1,110.42 : x
  2. Step 2: Convert to fraction form
    1,442.61/1,991.75 = 1,110.42/x
  3. Step 3: Cross multiply
    1,442.61x = 1,991.75 × 1,110.42
  4. Step 4: Simplify right side
    1,442.61x = 2,211,673.48
  5. Step 5: Solve for x
    x = 2,211,673.48/1,442.61
  6. Step 6: Final answer
    x = 1,533.11

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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.