Home / 3,440.40-4,747.70-1,868.48

Finding the Fourth Proportional to 3,440.40, 4,747.70 and 1,868.48

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Solution

The fourth proportional to 3,440.40, 4,747.70 and 1,868.48 is: 2,578.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,440.40 : 4,747.70 = 1,868.48 : x
  2. Step 2: Convert to fraction form
    3,440.40/4,747.70 = 1,868.48/x
  3. Step 3: Cross multiply
    3,440.40x = 4,747.70 × 1,868.48
  4. Step 4: Simplify right side
    3,440.40x = 8,870,982.50
  5. Step 5: Solve for x
    x = 8,870,982.50/3,440.40
  6. Step 6: Final answer
    x = 2,578.47

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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.