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Finding the Fourth Proportional to 3,521.75, 4,859.98 and 1,928.39

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Solution

The fourth proportional to 3,521.75, 4,859.98 and 1,928.39 is: 2,661.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,521.75 : 4,859.98 = 1,928.39 : x
  2. Step 2: Convert to fraction form
    3,521.75/4,859.98 = 1,928.39/x
  3. Step 3: Cross multiply
    3,521.75x = 4,859.98 × 1,928.39
  4. Step 4: Simplify right side
    3,521.75x = 9,371,907.71
  5. Step 5: Solve for x
    x = 9,371,907.71/3,521.75
  6. Step 6: Final answer
    x = 2,661.15

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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.