Home / 2,117.79-2,922.57-1,186.29

Finding the Fourth Proportional to 2,117.79, 2,922.57 and 1,186.29

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Solution

The fourth proportional to 2,117.79, 2,922.57 and 1,186.29 is: 1,637.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,117.79 : 2,922.57 = 1,186.29 : x
  2. Step 2: Convert to fraction form
    2,117.79/2,922.57 = 1,186.29/x
  3. Step 3: Cross multiply
    2,117.79x = 2,922.57 × 1,186.29
  4. Step 4: Simplify right side
    2,117.79x = 3,467,015.57
  5. Step 5: Solve for x
    x = 3,467,015.57/2,117.79
  6. Step 6: Final answer
    x = 1,637.09

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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.