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Finding the Fourth Proportional to 1,632.58, 2,253.22 and 1,213.40

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Solution

The fourth proportional to 1,632.58, 2,253.22 and 1,213.40 is: 1,674.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,632.58 : 2,253.22 = 1,213.40 : x
  2. Step 2: Convert to fraction form
    1,632.58/2,253.22 = 1,213.40/x
  3. Step 3: Cross multiply
    1,632.58x = 2,253.22 × 1,213.40
  4. Step 4: Simplify right side
    1,632.58x = 2,734,059.75
  5. Step 5: Solve for x
    x = 2,734,059.75/1,632.58
  6. Step 6: Final answer
    x = 1,674.69

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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.