Home / 4,135.80-6,210.90-2,191.80

Finding the Fourth Proportional to 4,135.80, 6,210.90 and 2,191.80

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Solution

The fourth proportional to 4,135.80, 6,210.90 and 2,191.80 is: 3,291.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,135.80 : 6,210.90 = 2,191.80 : x
  2. Step 2: Convert to fraction form
    4,135.80/6,210.90 = 2,191.80/x
  3. Step 3: Cross multiply
    4,135.80x = 6,210.90 × 2,191.80
  4. Step 4: Simplify right side
    4,135.80x = 13,613,050.62
  5. Step 5: Solve for x
    x = 13,613,050.62/4,135.80
  6. Step 6: Final answer
    x = 3,291.52

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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.