Home / 11,790.90-17,688.27-3,891.18

Finding the Fourth Proportional to 11,790.90, 17,688.27 and 3,891.18

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Solution

The fourth proportional to 11,790.90, 17,688.27 and 3,891.18 is: 5,837.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,790.90 : 17,688.27 = 3,891.18 : x
  2. Step 2: Convert to fraction form
    11,790.90/17,688.27 = 3,891.18/x
  3. Step 3: Cross multiply
    11,790.90x = 17,688.27 × 3,891.18
  4. Step 4: Simplify right side
    11,790.90x = 68,828,242.46
  5. Step 5: Solve for x
    x = 68,828,242.46/11,790.90
  6. Step 6: Final answer
    x = 5,837.40

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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.