Home / 5,424.78-8,136.81-1,528.86

Finding the Fourth Proportional to 5,424.78, 8,136.81 and 1,528.86

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Solution

The fourth proportional to 5,424.78, 8,136.81 and 1,528.86 is: 2,293.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,424.78 : 8,136.81 = 1,528.86 : x
  2. Step 2: Convert to fraction form
    5,424.78/8,136.81 = 1,528.86/x
  3. Step 3: Cross multiply
    5,424.78x = 8,136.81 × 1,528.86
  4. Step 4: Simplify right side
    5,424.78x = 12,440,043.34
  5. Step 5: Solve for x
    x = 12,440,043.34/5,424.78
  6. Step 6: Final answer
    x = 2,293.19

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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.