Home / 4,192.12-6,291.78-1,999.72

Finding the Fourth Proportional to 4,192.12, 6,291.78 and 1,999.72

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Solution

The fourth proportional to 4,192.12, 6,291.78 and 1,999.72 is: 3,001.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,192.12 : 6,291.78 = 1,999.72 : x
  2. Step 2: Convert to fraction form
    4,192.12/6,291.78 = 1,999.72/x
  3. Step 3: Cross multiply
    4,192.12x = 6,291.78 × 1,999.72
  4. Step 4: Simplify right side
    4,192.12x = 12,581,798.30
  5. Step 5: Solve for x
    x = 12,581,798.30/4,192.12
  6. Step 6: Final answer
    x = 3,001.30

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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.