Home / 1,610.08-2,221.53-911.45

Finding the Fourth Proportional to 1,610.08, 2,221.53 and 911.45

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Solution

The fourth proportional to 1,610.08, 2,221.53 and 911.45 is: 1,257.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,610.08 : 2,221.53 = 911.45 : x
  2. Step 2: Convert to fraction form
    1,610.08/2,221.53 = 911.45/x
  3. Step 3: Cross multiply
    1,610.08x = 2,221.53 × 911.45
  4. Step 4: Simplify right side
    1,610.08x = 2,024,815.65
  5. Step 5: Solve for x
    x = 2,024,815.65/1,610.08
  6. Step 6: Final answer
    x = 1,257.59

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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.