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Finding the Fourth Proportional to 7,459.22, 10,288.13 and 7,128.34

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Solution

The fourth proportional to 7,459.22, 10,288.13 and 7,128.34 is: 9,831.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,459.22 : 10,288.13 = 7,128.34 : x
  2. Step 2: Convert to fraction form
    7,459.22/10,288.13 = 7,128.34/x
  3. Step 3: Cross multiply
    7,459.22x = 10,288.13 × 7,128.34
  4. Step 4: Simplify right side
    7,459.22x = 73,337,288.60
  5. Step 5: Solve for x
    x = 73,337,288.60/7,459.22
  6. Step 6: Final answer
    x = 9,831.76

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