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Finding the Fourth Proportional to 2,859.66, 3,945.17 and 1,739.70

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Solution

The fourth proportional to 2,859.66, 3,945.17 and 1,739.70 is: 2,400.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,859.66 : 3,945.17 = 1,739.70 : x
  2. Step 2: Convert to fraction form
    2,859.66/3,945.17 = 1,739.70/x
  3. Step 3: Cross multiply
    2,859.66x = 3,945.17 × 1,739.70
  4. Step 4: Simplify right side
    2,859.66x = 6,863,416.60
  5. Step 5: Solve for x
    x = 6,863,416.60/2,859.66
  6. Step 6: Final answer
    x = 2,400.08

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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.