Home / 3,108.88-4,290.64-1,930.13

Finding the Fourth Proportional to 3,108.88, 4,290.64 and 1,930.13

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Solution

The fourth proportional to 3,108.88, 4,290.64 and 1,930.13 is: 2,663.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,108.88 : 4,290.64 = 1,930.13 : x
  2. Step 2: Convert to fraction form
    3,108.88/4,290.64 = 1,930.13/x
  3. Step 3: Cross multiply
    3,108.88x = 4,290.64 × 1,930.13
  4. Step 4: Simplify right side
    3,108.88x = 8,281,492.98
  5. Step 5: Solve for x
    x = 8,281,492.98/3,108.88
  6. Step 6: Final answer
    x = 2,663.82

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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.