Home / 1,163.76-1,748.16-1,131.36

Finding the Fourth Proportional to 1,163.76, 1,748.16 and 1,131.36

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Solution

The fourth proportional to 1,163.76, 1,748.16 and 1,131.36 is: 1,699.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,163.76 : 1,748.16 = 1,131.36 : x
  2. Step 2: Convert to fraction form
    1,163.76/1,748.16 = 1,131.36/x
  3. Step 3: Cross multiply
    1,163.76x = 1,748.16 × 1,131.36
  4. Step 4: Simplify right side
    1,163.76x = 1,977,798.30
  5. Step 5: Solve for x
    x = 1,977,798.30/1,163.76
  6. Step 6: Final answer
    x = 1,699.49

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.