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Finding the Fourth Proportional to 3,362.88, 4,640.74 and 1,870.80

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Solution

The fourth proportional to 3,362.88, 4,640.74 and 1,870.80 is: 2,581.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,362.88 : 4,640.74 = 1,870.80 : x
  2. Step 2: Convert to fraction form
    3,362.88/4,640.74 = 1,870.80/x
  3. Step 3: Cross multiply
    3,362.88x = 4,640.74 × 1,870.80
  4. Step 4: Simplify right side
    3,362.88x = 8,681,896.39
  5. Step 5: Solve for x
    x = 8,681,896.39/3,362.88
  6. Step 6: Final answer
    x = 2,581.68

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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.