Home / 2,165.85-3,246.21-1,242.06

Finding the Fourth Proportional to 2,165.85, 3,246.21 and 1,242.06

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Solution

The fourth proportional to 2,165.85, 3,246.21 and 1,242.06 is: 1,861.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,165.85 : 3,246.21 = 1,242.06 : x
  2. Step 2: Convert to fraction form
    2,165.85/3,246.21 = 1,242.06/x
  3. Step 3: Cross multiply
    2,165.85x = 3,246.21 × 1,242.06
  4. Step 4: Simplify right side
    2,165.85x = 4,031,987.59
  5. Step 5: Solve for x
    x = 4,031,987.59/2,165.85
  6. Step 6: Final answer
    x = 1,861.62

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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.