Home / 1,349.70-2,024.40-1,105.80

Finding the Fourth Proportional to 1,349.70, 2,024.40 and 1,105.80

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Solution

The fourth proportional to 1,349.70, 2,024.40 and 1,105.80 is: 1,658.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,349.70 : 2,024.40 = 1,105.80 : x
  2. Step 2: Convert to fraction form
    1,349.70/2,024.40 = 1,105.80/x
  3. Step 3: Cross multiply
    1,349.70x = 2,024.40 × 1,105.80
  4. Step 4: Simplify right side
    1,349.70x = 2,238,581.52
  5. Step 5: Solve for x
    x = 2,238,581.52/1,349.70
  6. Step 6: Final answer
    x = 1,658.58

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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.