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Finding the Fourth Proportional to 2,859.40, 3,943.40 and 1,797.26

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Solution

The fourth proportional to 2,859.40, 3,943.40 and 1,797.26 is: 2,478.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,859.40 : 3,943.40 = 1,797.26 : x
  2. Step 2: Convert to fraction form
    2,859.40/3,943.40 = 1,797.26/x
  3. Step 3: Cross multiply
    2,859.40x = 3,943.40 × 1,797.26
  4. Step 4: Simplify right side
    2,859.40x = 7,087,315.08
  5. Step 5: Solve for x
    x = 7,087,315.08/2,859.40
  6. Step 6: Final answer
    x = 2,478.60

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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.