Home / 3,131.89-4,712.85-2,580.58

Finding the Fourth Proportional to 3,131.89, 4,712.85 and 2,580.58

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Solution

The fourth proportional to 3,131.89, 4,712.85 and 2,580.58 is: 3,883.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,131.89 : 4,712.85 = 2,580.58 : x
  2. Step 2: Convert to fraction form
    3,131.89/4,712.85 = 2,580.58/x
  3. Step 3: Cross multiply
    3,131.89x = 4,712.85 × 2,580.58
  4. Step 4: Simplify right side
    3,131.89x = 12,161,886.45
  5. Step 5: Solve for x
    x = 12,161,886.45/3,131.89
  6. Step 6: Final answer
    x = 3,883.24

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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.