Home / 3,105.32-4,285.34-1,708.06

Finding the Fourth Proportional to 3,105.32, 4,285.34 and 1,708.06

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Solution

The fourth proportional to 3,105.32, 4,285.34 and 1,708.06 is: 2,357.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,105.32 : 4,285.34 = 1,708.06 : x
  2. Step 2: Convert to fraction form
    3,105.32/4,285.34 = 1,708.06/x
  3. Step 3: Cross multiply
    3,105.32x = 4,285.34 × 1,708.06
  4. Step 4: Simplify right side
    3,105.32x = 7,319,617.84
  5. Step 5: Solve for x
    x = 7,319,617.84/3,105.32
  6. Step 6: Final answer
    x = 2,357.12

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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.