Home / 1,116.24-1,539.42-798.30

Finding the Fourth Proportional to 1,116.24, 1,539.42 and 798.30

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Solution

The fourth proportional to 1,116.24, 1,539.42 and 798.30 is: 1,100.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,116.24 : 1,539.42 = 798.30 : x
  2. Step 2: Convert to fraction form
    1,116.24/1,539.42 = 798.30/x
  3. Step 3: Cross multiply
    1,116.24x = 1,539.42 × 798.30
  4. Step 4: Simplify right side
    1,116.24x = 1,228,918.99
  5. Step 5: Solve for x
    x = 1,228,918.99/1,116.24
  6. Step 6: Final answer
    x = 1,100.95

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1.5x scale

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.