Home / 2,259.75-3,118.20-1,315.74

Finding the Fourth Proportional to 2,259.75, 3,118.20 and 1,315.74

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Solution

The fourth proportional to 2,259.75, 3,118.20 and 1,315.74 is: 1,815.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,259.75 : 3,118.20 = 1,315.74 : x
  2. Step 2: Convert to fraction form
    2,259.75/3,118.20 = 1,315.74/x
  3. Step 3: Cross multiply
    2,259.75x = 3,118.20 × 1,315.74
  4. Step 4: Simplify right side
    2,259.75x = 4,102,747.23
  5. Step 5: Solve for x
    x = 4,102,747.23/2,259.75
  6. Step 6: Final answer
    x = 1,815.58

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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.