Home / 1,850.55-2,553.03-1,187.30

Finding the Fourth Proportional to 1,850.55, 2,553.03 and 1,187.30

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Solution

The fourth proportional to 1,850.55, 2,553.03 and 1,187.30 is: 1,638.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,850.55 : 2,553.03 = 1,187.30 : x
  2. Step 2: Convert to fraction form
    1,850.55/2,553.03 = 1,187.30/x
  3. Step 3: Cross multiply
    1,850.55x = 2,553.03 × 1,187.30
  4. Step 4: Simplify right side
    1,850.55x = 3,031,212.52
  5. Step 5: Solve for x
    x = 3,031,212.52/1,850.55
  6. Step 6: Final answer
    x = 1,638.01

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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.