Home / 4,312.11-6,469.18-1,390.30

Finding the Fourth Proportional to 4,312.11, 6,469.18 and 1,390.30

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Solution

The fourth proportional to 4,312.11, 6,469.18 and 1,390.30 is: 2,085.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,312.11 : 6,469.18 = 1,390.30 : x
  2. Step 2: Convert to fraction form
    4,312.11/6,469.18 = 1,390.30/x
  3. Step 3: Cross multiply
    4,312.11x = 6,469.18 × 1,390.30
  4. Step 4: Simplify right side
    4,312.11x = 8,994,100.95
  5. Step 5: Solve for x
    x = 8,994,100.95/4,312.11
  6. Step 6: Final answer
    x = 2,085.78

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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.