Home / 3,108.96-4,290.66-1,783.44

Finding the Fourth Proportional to 3,108.96, 4,290.66 and 1,783.44

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Solution

The fourth proportional to 3,108.96, 4,290.66 and 1,783.44 is: 2,461.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,108.96 : 4,290.66 = 1,783.44 : x
  2. Step 2: Convert to fraction form
    3,108.96/4,290.66 = 1,783.44/x
  3. Step 3: Cross multiply
    3,108.96x = 4,290.66 × 1,783.44
  4. Step 4: Simplify right side
    3,108.96x = 7,652,134.67
  5. Step 5: Solve for x
    x = 7,652,134.67/3,108.96
  6. Step 6: Final answer
    x = 2,461.32

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Double scale
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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.