Home / 3,105.58-4,285.67-2,312.45

Finding the Fourth Proportional to 3,105.58, 4,285.67 and 2,312.45

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Solution

The fourth proportional to 3,105.58, 4,285.67 and 2,312.45 is: 3,191.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,105.58 : 4,285.67 = 2,312.45 : x
  2. Step 2: Convert to fraction form
    3,105.58/4,285.67 = 2,312.45/x
  3. Step 3: Cross multiply
    3,105.58x = 4,285.67 × 2,312.45
  4. Step 4: Simplify right side
    3,105.58x = 9,910,407.26
  5. Step 5: Solve for x
    x = 9,910,407.26/3,105.58
  6. Step 6: Final answer
    x = 3,191.16

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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.