Home / 5,428.95-8,147.53-3,971.86

Finding the Fourth Proportional to 5,428.95, 8,147.53 and 3,971.86

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Solution

The fourth proportional to 5,428.95, 8,147.53 and 3,971.86 is: 5,960.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,428.95 : 8,147.53 = 3,971.86 : x
  2. Step 2: Convert to fraction form
    5,428.95/8,147.53 = 3,971.86/x
  3. Step 3: Cross multiply
    5,428.95x = 8,147.53 × 3,971.86
  4. Step 4: Simplify right side
    5,428.95x = 32,360,848.51
  5. Step 5: Solve for x
    x = 32,360,848.51/5,428.95
  6. Step 6: Final answer
    x = 5,960.79

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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.