Home / 1,645.38-2,270.83-1,087.01

Finding the Fourth Proportional to 1,645.38, 2,270.83 and 1,087.01

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Solution

The fourth proportional to 1,645.38, 2,270.83 and 1,087.01 is: 1,500.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,645.38 : 2,270.83 = 1,087.01 : x
  2. Step 2: Convert to fraction form
    1,645.38/2,270.83 = 1,087.01/x
  3. Step 3: Cross multiply
    1,645.38x = 2,270.83 × 1,087.01
  4. Step 4: Simplify right side
    1,645.38x = 2,468,409.48
  5. Step 5: Solve for x
    x = 2,468,409.48/1,645.38
  6. Step 6: Final answer
    x = 1,500.21

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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.