Home / 1,539.13-2,309.37-808.53

Finding the Fourth Proportional to 1,539.13, 2,309.37 and 808.53

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Solution

The fourth proportional to 1,539.13, 2,309.37 and 808.53 is: 1,213.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,539.13 : 2,309.37 = 808.53 : x
  2. Step 2: Convert to fraction form
    1,539.13/2,309.37 = 808.53/x
  3. Step 3: Cross multiply
    1,539.13x = 2,309.37 × 808.53
  4. Step 4: Simplify right side
    1,539.13x = 1,867,194.93
  5. Step 5: Solve for x
    x = 1,867,194.93/1,539.13
  6. Step 6: Final answer
    x = 1,213.15

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.