Home / 1,267.91-1,748.30-1,090.68

Finding the Fourth Proportional to 1,267.91, 1,748.30 and 1,090.68

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Solution

The fourth proportional to 1,267.91, 1,748.30 and 1,090.68 is: 1,503.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,267.91 : 1,748.30 = 1,090.68 : x
  2. Step 2: Convert to fraction form
    1,267.91/1,748.30 = 1,090.68/x
  3. Step 3: Cross multiply
    1,267.91x = 1,748.30 × 1,090.68
  4. Step 4: Simplify right side
    1,267.91x = 1,906,835.84
  5. Step 5: Solve for x
    x = 1,906,835.84/1,267.91
  6. Step 6: Final answer
    x = 1,503.92

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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.