Home / 9,120.34-13,680.01-2,795.21

Finding the Fourth Proportional to 9,120.34, 13,680.01 and 2,795.21

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Solution

The fourth proportional to 9,120.34, 13,680.01 and 2,795.21 is: 4,192.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,120.34 : 13,680.01 = 2,795.21 : x
  2. Step 2: Convert to fraction form
    9,120.34/13,680.01 = 2,795.21/x
  3. Step 3: Cross multiply
    9,120.34x = 13,680.01 × 2,795.21
  4. Step 4: Simplify right side
    9,120.34x = 38,238,487.15
  5. Step 5: Solve for x
    x = 38,238,487.15/9,120.34
  6. Step 6: Final answer
    x = 4,192.66

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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.