Home / 1,460.59-2,191.38-638.44

Finding the Fourth Proportional to 1,460.59, 2,191.38 and 638.44

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Solution

The fourth proportional to 1,460.59, 2,191.38 and 638.44 is: 957.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,460.59 : 2,191.38 = 638.44 : x
  2. Step 2: Convert to fraction form
    1,460.59/2,191.38 = 638.44/x
  3. Step 3: Cross multiply
    1,460.59x = 2,191.38 × 638.44
  4. Step 4: Simplify right side
    1,460.59x = 1,399,064.65
  5. Step 5: Solve for x
    x = 1,399,064.65/1,460.59
  6. Step 6: Final answer
    x = 957.88

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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.