Home / 1,913.11-2,639.61-1,167.02

Finding the Fourth Proportional to 1,913.11, 2,639.61 and 1,167.02

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Solution

The fourth proportional to 1,913.11, 2,639.61 and 1,167.02 is: 1,610.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,913.11 : 2,639.61 = 1,167.02 : x
  2. Step 2: Convert to fraction form
    1,913.11/2,639.61 = 1,167.02/x
  3. Step 3: Cross multiply
    1,913.11x = 2,639.61 × 1,167.02
  4. Step 4: Simplify right side
    1,913.11x = 3,080,471.83
  5. Step 5: Solve for x
    x = 3,080,471.83/1,913.11
  6. Step 6: Final answer
    x = 1,610.19

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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.