Home / 1,913.22-2,634.12-1,663.74

Finding the Fourth Proportional to 1,913.22, 2,634.12 and 1,663.74

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Solution

The fourth proportional to 1,913.22, 2,634.12 and 1,663.74 is: 2,290.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,913.22 : 2,634.12 = 1,663.74 : x
  2. Step 2: Convert to fraction form
    1,913.22/2,634.12 = 1,663.74/x
  3. Step 3: Cross multiply
    1,913.22x = 2,634.12 × 1,663.74
  4. Step 4: Simplify right side
    1,913.22x = 4,382,490.81
  5. Step 5: Solve for x
    x = 4,382,490.81/1,913.22
  6. Step 6: Final answer
    x = 2,290.64

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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.