Home / 2,315.37-3,193.87-1,320.46

Finding the Fourth Proportional to 2,315.37, 3,193.87 and 1,320.46

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Solution

The fourth proportional to 2,315.37, 3,193.87 and 1,320.46 is: 1,821.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,315.37 : 3,193.87 = 1,320.46 : x
  2. Step 2: Convert to fraction form
    2,315.37/3,193.87 = 1,320.46/x
  3. Step 3: Cross multiply
    2,315.37x = 3,193.87 × 1,320.46
  4. Step 4: Simplify right side
    2,315.37x = 4,217,377.58
  5. Step 5: Solve for x
    x = 4,217,377.58/2,315.37
  6. Step 6: Final answer
    x = 1,821.47

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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.