Home / 5,428.42-8,142.92-1,533.13

Finding the Fourth Proportional to 5,428.42, 8,142.92 and 1,533.13

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Solution

The fourth proportional to 5,428.42, 8,142.92 and 1,533.13 is: 2,299.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,428.42 : 8,142.92 = 1,533.13 : x
  2. Step 2: Convert to fraction form
    5,428.42/8,142.92 = 1,533.13/x
  3. Step 3: Cross multiply
    5,428.42x = 8,142.92 × 1,533.13
  4. Step 4: Simplify right side
    5,428.42x = 12,484,147.27
  5. Step 5: Solve for x
    x = 12,484,147.27/5,428.42
  6. Step 6: Final answer
    x = 2,299.78

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1.5x scale

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.