Home / 1,284.18-1,917.56-1,021.24

Finding the Fourth Proportional to 1,284.18, 1,917.56 and 1,021.24

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Solution

The fourth proportional to 1,284.18, 1,917.56 and 1,021.24 is: 1,524.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,284.18 : 1,917.56 = 1,021.24 : x
  2. Step 2: Convert to fraction form
    1,284.18/1,917.56 = 1,021.24/x
  3. Step 3: Cross multiply
    1,284.18x = 1,917.56 × 1,021.24
  4. Step 4: Simplify right side
    1,284.18x = 1,958,288.97
  5. Step 5: Solve for x
    x = 1,958,288.97/1,284.18
  6. Step 6: Final answer
    x = 1,524.93

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.