Home / 2,315.19-3,474.81-1,220.34

Finding the Fourth Proportional to 2,315.19, 3,474.81 and 1,220.34

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Solution

The fourth proportional to 2,315.19, 3,474.81 and 1,220.34 is: 1,831.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,315.19 : 3,474.81 = 1,220.34 : x
  2. Step 2: Convert to fraction form
    2,315.19/3,474.81 = 1,220.34/x
  3. Step 3: Cross multiply
    2,315.19x = 3,474.81 × 1,220.34
  4. Step 4: Simplify right side
    2,315.19x = 4,240,449.64
  5. Step 5: Solve for x
    x = 4,240,449.64/2,315.19
  6. Step 6: Final answer
    x = 1,831.58

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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.