Home / 3,105.06-4,657.59-913.56

Finding the Fourth Proportional to 3,105.06, 4,657.59 and 913.56

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Solution

The fourth proportional to 3,105.06, 4,657.59 and 913.56 is: 1,370.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,105.06 : 4,657.59 = 913.56 : x
  2. Step 2: Convert to fraction form
    3,105.06/4,657.59 = 913.56/x
  3. Step 3: Cross multiply
    3,105.06x = 4,657.59 × 913.56
  4. Step 4: Simplify right side
    3,105.06x = 4,254,987.92
  5. Step 5: Solve for x
    x = 4,254,987.92/3,105.06
  6. Step 6: Final answer
    x = 1,370.34

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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.