Home / 1,478.75-2,040.82-1,105.08

Finding the Fourth Proportional to 1,478.75, 2,040.82 and 1,105.08

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Solution

The fourth proportional to 1,478.75, 2,040.82 and 1,105.08 is: 1,525.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,478.75 : 2,040.82 = 1,105.08 : x
  2. Step 2: Convert to fraction form
    1,478.75/2,040.82 = 1,105.08/x
  3. Step 3: Cross multiply
    1,478.75x = 2,040.82 × 1,105.08
  4. Step 4: Simplify right side
    1,478.75x = 2,255,262.67
  5. Step 5: Solve for x
    x = 2,255,262.67/1,478.75
  6. Step 6: Final answer
    x = 1,525.12

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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.