Home / 3,100.21-4,281.06-2,312.89

Finding the Fourth Proportional to 3,100.21, 4,281.06 and 2,312.89

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Solution

The fourth proportional to 3,100.21, 4,281.06 and 2,312.89 is: 3,193.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,100.21 : 4,281.06 = 2,312.89 : x
  2. Step 2: Convert to fraction form
    3,100.21/4,281.06 = 2,312.89/x
  3. Step 3: Cross multiply
    3,100.21x = 4,281.06 × 2,312.89
  4. Step 4: Simplify right side
    3,100.21x = 9,901,620.86
  5. Step 5: Solve for x
    x = 9,901,620.86/3,100.21
  6. Step 6: Final answer
    x = 3,193.85

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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.