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Finding the Fourth Proportional to 7,124.54, 10,679.22 and 3,617.18

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Solution

The fourth proportional to 7,124.54, 10,679.22 and 3,617.18 is: 5,421.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,124.54 : 10,679.22 = 3,617.18 : x
  2. Step 2: Convert to fraction form
    7,124.54/10,679.22 = 3,617.18/x
  3. Step 3: Cross multiply
    7,124.54x = 10,679.22 × 3,617.18
  4. Step 4: Simplify right side
    7,124.54x = 38,628,661.00
  5. Step 5: Solve for x
    x = 38,628,661.00/7,124.54
  6. Step 6: Final answer
    x = 5,421.92

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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.