Home / 2,281.60-3,422.41-638.16

Finding the Fourth Proportional to 2,281.60, 3,422.41 and 638.16

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Solution

The fourth proportional to 2,281.60, 3,422.41 and 638.16 is: 957.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,281.60 : 3,422.41 = 638.16 : x
  2. Step 2: Convert to fraction form
    2,281.60/3,422.41 = 638.16/x
  3. Step 3: Cross multiply
    2,281.60x = 3,422.41 × 638.16
  4. Step 4: Simplify right side
    2,281.60x = 2,184,053.58
  5. Step 5: Solve for x
    x = 2,184,053.58/2,281.60
  6. Step 6: Final answer
    x = 957.25

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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.