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Finding the Fourth Proportional to 2,194.87, 3,291.79 and 807.46

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Solution

The fourth proportional to 2,194.87, 3,291.79 and 807.46 is: 1,211.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,194.87 : 3,291.79 = 807.46 : x
  2. Step 2: Convert to fraction form
    2,194.87/3,291.79 = 807.46/x
  3. Step 3: Cross multiply
    2,194.87x = 3,291.79 × 807.46
  4. Step 4: Simplify right side
    2,194.87x = 2,657,984.72
  5. Step 5: Solve for x
    x = 2,657,984.72/2,194.87
  6. Step 6: Final answer
    x = 1,211.00

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.