Home / 2,169.18-2,992.95-1,224.99

Finding the Fourth Proportional to 2,169.18, 2,992.95 and 1,224.99

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Solution

The fourth proportional to 2,169.18, 2,992.95 and 1,224.99 is: 1,690.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,169.18 : 2,992.95 = 1,224.99 : x
  2. Step 2: Convert to fraction form
    2,169.18/2,992.95 = 1,224.99/x
  3. Step 3: Cross multiply
    2,169.18x = 2,992.95 × 1,224.99
  4. Step 4: Simplify right side
    2,169.18x = 3,666,333.82
  5. Step 5: Solve for x
    x = 3,666,333.82/2,169.18
  6. Step 6: Final answer
    x = 1,690.19

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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.