Home / 1,120.35-1,545.92-1,083.15

Finding the Fourth Proportional to 1,120.35, 1,545.92 and 1,083.15

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Solution

The fourth proportional to 1,120.35, 1,545.92 and 1,083.15 is: 1,494.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,120.35 : 1,545.92 = 1,083.15 : x
  2. Step 2: Convert to fraction form
    1,120.35/1,545.92 = 1,083.15/x
  3. Step 3: Cross multiply
    1,120.35x = 1,545.92 × 1,083.15
  4. Step 4: Simplify right side
    1,120.35x = 1,674,457.83
  5. Step 5: Solve for x
    x = 1,674,457.83/1,120.35
  6. Step 6: Final answer
    x = 1,494.58

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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.