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Finding the Fourth Proportional to 7,615.91, 10,509.48 and 4,258.97

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Solution

The fourth proportional to 7,615.91, 10,509.48 and 4,258.97 is: 5,877.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,615.91 : 10,509.48 = 4,258.97 : x
  2. Step 2: Convert to fraction form
    7,615.91/10,509.48 = 4,258.97/x
  3. Step 3: Cross multiply
    7,615.91x = 10,509.48 × 4,258.97
  4. Step 4: Simplify right side
    7,615.91x = 44,759,546.90
  5. Step 5: Solve for x
    x = 44,759,546.90/7,615.91
  6. Step 6: Final answer
    x = 5,877.11

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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.