Home / 3,169.35-4,754.90-1,390.10

Finding the Fourth Proportional to 3,169.35, 4,754.90 and 1,390.10

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Solution

The fourth proportional to 3,169.35, 4,754.90 and 1,390.10 is: 2,085.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,169.35 : 4,754.90 = 1,390.10 : x
  2. Step 2: Convert to fraction form
    3,169.35/4,754.90 = 1,390.10/x
  3. Step 3: Cross multiply
    3,169.35x = 4,754.90 × 1,390.10
  4. Step 4: Simplify right side
    3,169.35x = 6,609,755.77
  5. Step 5: Solve for x
    x = 6,609,755.77/3,169.35
  6. Step 6: Final answer
    x = 2,085.52

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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.