Home / 2,315.09-3,194.91-1,320.53

Finding the Fourth Proportional to 2,315.09, 3,194.91 and 1,320.53

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Solution

The fourth proportional to 2,315.09, 3,194.91 and 1,320.53 is: 1,822.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,315.09 : 3,194.91 = 1,320.53 : x
  2. Step 2: Convert to fraction form
    2,315.09/3,194.91 = 1,320.53/x
  3. Step 3: Cross multiply
    2,315.09x = 3,194.91 × 1,320.53
  4. Step 4: Simplify right side
    2,315.09x = 4,218,958.53
  5. Step 5: Solve for x
    x = 4,218,958.53/2,315.09
  6. Step 6: Final answer
    x = 1,822.38

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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.