Home / 7,407.96-11,111.64-1,861.35

Finding the Fourth Proportional to 7,407.96, 11,111.64 and 1,861.35

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Solution

The fourth proportional to 7,407.96, 11,111.64 and 1,861.35 is: 2,791.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,407.96 : 11,111.64 = 1,861.35 : x
  2. Step 2: Convert to fraction form
    7,407.96/11,111.64 = 1,861.35/x
  3. Step 3: Cross multiply
    7,407.96x = 11,111.64 × 1,861.35
  4. Step 4: Simplify right side
    7,407.96x = 20,682,651.11
  5. Step 5: Solve for x
    x = 20,682,651.11/7,407.96
  6. Step 6: Final answer
    x = 2,791.95

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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.