Home / 2,119.43-2,924.80-1,187.93

Finding the Fourth Proportional to 2,119.43, 2,924.80 and 1,187.93

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Solution

The fourth proportional to 2,119.43, 2,924.80 and 1,187.93 is: 1,639.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,119.43 : 2,924.80 = 1,187.93 : x
  2. Step 2: Convert to fraction form
    2,119.43/2,924.80 = 1,187.93/x
  3. Step 3: Cross multiply
    2,119.43x = 2,924.80 × 1,187.93
  4. Step 4: Simplify right side
    2,119.43x = 3,474,457.66
  5. Step 5: Solve for x
    x = 3,474,457.66/2,119.43
  6. Step 6: Final answer
    x = 1,639.34

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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.