Home / 1,657.22-2,287.01-911.14

Finding the Fourth Proportional to 1,657.22, 2,287.01 and 911.14

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Solution

The fourth proportional to 1,657.22, 2,287.01 and 911.14 is: 1,257.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,657.22 : 2,287.01 = 911.14 : x
  2. Step 2: Convert to fraction form
    1,657.22/2,287.01 = 911.14/x
  3. Step 3: Cross multiply
    1,657.22x = 2,287.01 × 911.14
  4. Step 4: Simplify right side
    1,657.22x = 2,083,786.29
  5. Step 5: Solve for x
    x = 2,083,786.29/1,657.22
  6. Step 6: Final answer
    x = 1,257.40

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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.