Home / 5,424.21-8,136.32-1,528.11

Finding the Fourth Proportional to 5,424.21, 8,136.32 and 1,528.11

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Solution

The fourth proportional to 5,424.21, 8,136.32 and 1,528.11 is: 2,292.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,424.21 : 8,136.32 = 1,528.11 : x
  2. Step 2: Convert to fraction form
    5,424.21/8,136.32 = 1,528.11/x
  3. Step 3: Cross multiply
    5,424.21x = 8,136.32 × 1,528.11
  4. Step 4: Simplify right side
    5,424.21x = 12,433,191.96
  5. Step 5: Solve for x
    x = 12,433,191.96/5,424.21
  6. Step 6: Final answer
    x = 2,292.17

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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.