Home / 2,309.80-3,187.52-1,315.14

Finding the Fourth Proportional to 2,309.80, 3,187.52 and 1,315.14

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Solution

The fourth proportional to 2,309.80, 3,187.52 and 1,315.14 is: 1,814.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,309.80 : 3,187.52 = 1,315.14 : x
  2. Step 2: Convert to fraction form
    2,309.80/3,187.52 = 1,315.14/x
  3. Step 3: Cross multiply
    2,309.80x = 3,187.52 × 1,315.14
  4. Step 4: Simplify right side
    2,309.80x = 4,192,035.05
  5. Step 5: Solve for x
    x = 4,192,035.05/2,309.80
  6. Step 6: Final answer
    x = 1,814.89

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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.