Home / 1,645.47-2,270.66-899.42

Finding the Fourth Proportional to 1,645.47, 2,270.66 and 899.42

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Solution

The fourth proportional to 1,645.47, 2,270.66 and 899.42 is: 1,241.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,645.47 : 2,270.66 = 899.42 : x
  2. Step 2: Convert to fraction form
    1,645.47/2,270.66 = 899.42/x
  3. Step 3: Cross multiply
    1,645.47x = 2,270.66 × 899.42
  4. Step 4: Simplify right side
    1,645.47x = 2,042,261.17
  5. Step 5: Solve for x
    x = 2,042,261.17/1,645.47
  6. Step 6: Final answer
    x = 1,241.14

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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.