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Finding the Fourth Proportional to 2,154.80, 3,232.20 and 694.10

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Solution

The fourth proportional to 2,154.80, 3,232.20 and 694.10 is: 1,041.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,154.80 : 3,232.20 = 694.10 : x
  2. Step 2: Convert to fraction form
    2,154.80/3,232.20 = 694.10/x
  3. Step 3: Cross multiply
    2,154.80x = 3,232.20 × 694.10
  4. Step 4: Simplify right side
    2,154.80x = 2,243,470.02
  5. Step 5: Solve for x
    x = 2,243,470.02/2,154.80
  6. Step 6: Final answer
    x = 1,041.15

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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.