Home / 1,487.48-2,227.06-1,121.12

Finding the Fourth Proportional to 1,487.48, 2,227.06 and 1,121.12

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Solution

The fourth proportional to 1,487.48, 2,227.06 and 1,121.12 is: 1,678.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,487.48 : 2,227.06 = 1,121.12 : x
  2. Step 2: Convert to fraction form
    1,487.48/2,227.06 = 1,121.12/x
  3. Step 3: Cross multiply
    1,487.48x = 2,227.06 × 1,121.12
  4. Step 4: Simplify right side
    1,487.48x = 2,496,801.51
  5. Step 5: Solve for x
    x = 2,496,801.51/1,487.48
  6. Step 6: Final answer
    x = 1,678.54

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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.