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Finding the Fourth Proportional to 2,281.80, 3,422.52 and 638.22

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Solution

The fourth proportional to 2,281.80, 3,422.52 and 638.22 is: 957.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,281.80 : 3,422.52 = 638.22 : x
  2. Step 2: Convert to fraction form
    2,281.80/3,422.52 = 638.22/x
  3. Step 3: Cross multiply
    2,281.80x = 3,422.52 × 638.22
  4. Step 4: Simplify right side
    2,281.80x = 2,184,320.71
  5. Step 5: Solve for x
    x = 2,184,320.71/2,281.80
  6. Step 6: Final answer
    x = 957.28

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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.