Home / 5,277.21-7,909.61-2,155.29

Finding the Fourth Proportional to 5,277.21, 7,909.61 and 2,155.29

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Solution

The fourth proportional to 5,277.21, 7,909.61 and 2,155.29 is: 3,230.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,277.21 : 7,909.61 = 2,155.29 : x
  2. Step 2: Convert to fraction form
    5,277.21/7,909.61 = 2,155.29/x
  3. Step 3: Cross multiply
    5,277.21x = 7,909.61 × 2,155.29
  4. Step 4: Simplify right side
    5,277.21x = 17,047,492.56
  5. Step 5: Solve for x
    x = 17,047,492.56/5,277.21
  6. Step 6: Final answer
    x = 3,230.40

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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.