Home / 3,851.70-5,315.93-2,258.61

Finding the Fourth Proportional to 3,851.70, 5,315.93 and 2,258.61

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Solution

The fourth proportional to 3,851.70, 5,315.93 and 2,258.61 is: 3,117.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,851.70 : 5,315.93 = 2,258.61 : x
  2. Step 2: Convert to fraction form
    3,851.70/5,315.93 = 2,258.61/x
  3. Step 3: Cross multiply
    3,851.70x = 5,315.93 × 2,258.61
  4. Step 4: Simplify right side
    3,851.70x = 12,006,604.85
  5. Step 5: Solve for x
    x = 12,006,604.85/3,851.70
  6. Step 6: Final answer
    x = 3,117.22

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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.