Home / 3,117.36-4,676.84-1,385.56

Finding the Fourth Proportional to 3,117.36, 4,676.84 and 1,385.56

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Solution

The fourth proportional to 3,117.36, 4,676.84 and 1,385.56 is: 2,078.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,117.36 : 4,676.84 = 1,385.56 : x
  2. Step 2: Convert to fraction form
    3,117.36/4,676.84 = 1,385.56/x
  3. Step 3: Cross multiply
    3,117.36x = 4,676.84 × 1,385.56
  4. Step 4: Simplify right side
    3,117.36x = 6,480,042.43
  5. Step 5: Solve for x
    x = 6,480,042.43/3,117.36
  6. Step 6: Final answer
    x = 2,078.70

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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.