Home / 7,130.75-9,840.26-4,147.62

Finding the Fourth Proportional to 7,130.75, 9,840.26 and 4,147.62

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Solution

The fourth proportional to 7,130.75, 9,840.26 and 4,147.62 is: 5,723.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,130.75 : 9,840.26 = 4,147.62 : x
  2. Step 2: Convert to fraction form
    7,130.75/9,840.26 = 4,147.62/x
  3. Step 3: Cross multiply
    7,130.75x = 9,840.26 × 4,147.62
  4. Step 4: Simplify right side
    7,130.75x = 40,813,659.18
  5. Step 5: Solve for x
    x = 40,813,659.18/7,130.75
  6. Step 6: Final answer
    x = 5,723.61

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.