Home / 2,090.78-3,136.27-1,165.64

Finding the Fourth Proportional to 2,090.78, 3,136.27 and 1,165.64

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Solution

The fourth proportional to 2,090.78, 3,136.27 and 1,165.64 is: 1,748.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,090.78 : 3,136.27 = 1,165.64 : x
  2. Step 2: Convert to fraction form
    2,090.78/3,136.27 = 1,165.64/x
  3. Step 3: Cross multiply
    2,090.78x = 3,136.27 × 1,165.64
  4. Step 4: Simplify right side
    2,090.78x = 3,655,761.76
  5. Step 5: Solve for x
    x = 3,655,761.76/2,090.78
  6. Step 6: Final answer
    x = 1,748.52

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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.