Home / 7,428.92-11,128.93-4,132.01

Finding the Fourth Proportional to 7,428.92, 11,128.93 and 4,132.01

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Solution

The fourth proportional to 7,428.92, 11,128.93 and 4,132.01 is: 6,189.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,428.92 : 11,128.93 = 4,132.01 : x
  2. Step 2: Convert to fraction form
    7,428.92/11,128.93 = 4,132.01/x
  3. Step 3: Cross multiply
    7,428.92x = 11,128.93 × 4,132.01
  4. Step 4: Simplify right side
    7,428.92x = 45,984,867.54
  5. Step 5: Solve for x
    x = 45,984,867.54/7,428.92
  6. Step 6: Final answer
    x = 6,189.98

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.