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Finding the Fourth Proportional to 7,504.75, 10,355.75 and 4,147.40

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Solution

The fourth proportional to 7,504.75, 10,355.75 and 4,147.40 is: 5,722.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,504.75 : 10,355.75 = 4,147.40 : x
  2. Step 2: Convert to fraction form
    7,504.75/10,355.75 = 4,147.40/x
  3. Step 3: Cross multiply
    7,504.75x = 10,355.75 × 4,147.40
  4. Step 4: Simplify right side
    7,504.75x = 42,949,458.26
  5. Step 5: Solve for x
    x = 42,949,458.26/7,504.75
  6. Step 6: Final answer
    x = 5,722.97

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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.