Home / 1,816.91-2,506.57-1,117.88

Finding the Fourth Proportional to 1,816.91, 2,506.57 and 1,117.88

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Solution

The fourth proportional to 1,816.91, 2,506.57 and 1,117.88 is: 1,542.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,816.91 : 2,506.57 = 1,117.88 : x
  2. Step 2: Convert to fraction form
    1,816.91/2,506.57 = 1,117.88/x
  3. Step 3: Cross multiply
    1,816.91x = 2,506.57 × 1,117.88
  4. Step 4: Simplify right side
    1,816.91x = 2,802,029.14
  5. Step 5: Solve for x
    x = 2,802,029.14/1,816.91
  6. Step 6: Final answer
    x = 1,542.20

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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.