Home / 1,800.70-2,697.57-1,105.35

Finding the Fourth Proportional to 1,800.70, 2,697.57 and 1,105.35

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Solution

The fourth proportional to 1,800.70, 2,697.57 and 1,105.35 is: 1,655.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,800.70 : 2,697.57 = 1,105.35 : x
  2. Step 2: Convert to fraction form
    1,800.70/2,697.57 = 1,105.35/x
  3. Step 3: Cross multiply
    1,800.70x = 2,697.57 × 1,105.35
  4. Step 4: Simplify right side
    1,800.70x = 2,981,748.88
  5. Step 5: Solve for x
    x = 2,981,748.88/1,800.70
  6. Step 6: Final answer
    x = 1,655.89

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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.