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Finding the Fourth Proportional to 3,203.54, 4,420.67 and 1,859.20

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Solution

The fourth proportional to 3,203.54, 4,420.67 and 1,859.20 is: 2,565.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,203.54 : 4,420.67 = 1,859.20 : x
  2. Step 2: Convert to fraction form
    3,203.54/4,420.67 = 1,859.20/x
  3. Step 3: Cross multiply
    3,203.54x = 4,420.67 × 1,859.20
  4. Step 4: Simplify right side
    3,203.54x = 8,218,903.26
  5. Step 5: Solve for x
    x = 8,218,903.26/3,203.54
  6. Step 6: Final answer
    x = 2,565.57

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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.