Home / 5,423.36-8,136.48-3,109.76

Finding the Fourth Proportional to 5,423.36, 8,136.48 and 3,109.76

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Solution

The fourth proportional to 5,423.36, 8,136.48 and 3,109.76 is: 4,665.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,423.36 : 8,136.48 = 3,109.76 : x
  2. Step 2: Convert to fraction form
    5,423.36/8,136.48 = 3,109.76/x
  3. Step 3: Cross multiply
    5,423.36x = 8,136.48 × 3,109.76
  4. Step 4: Simplify right side
    5,423.36x = 25,302,500.04
  5. Step 5: Solve for x
    x = 25,302,500.04/5,423.36
  6. Step 6: Final answer
    x = 4,665.47

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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.