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Finding the Fourth Proportional to 7,395.66, 10,258.32 and 7,129.68

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Solution

The fourth proportional to 7,395.66, 10,258.32 and 7,129.68 is: 9,889.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,395.66 : 10,258.32 = 7,129.68 : x
  2. Step 2: Convert to fraction form
    7,395.66/10,258.32 = 7,129.68/x
  3. Step 3: Cross multiply
    7,395.66x = 10,258.32 × 7,129.68
  4. Step 4: Simplify right side
    7,395.66x = 73,138,538.94
  5. Step 5: Solve for x
    x = 73,138,538.94/7,395.66
  6. Step 6: Final answer
    x = 9,889.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.