Home / 7,808.48-11,715.36-3,423.68

Finding the Fourth Proportional to 7,808.48, 11,715.36 and 3,423.68

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Solution

The fourth proportional to 7,808.48, 11,715.36 and 3,423.68 is: 5,136.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,808.48 : 11,715.36 = 3,423.68 : x
  2. Step 2: Convert to fraction form
    7,808.48/11,715.36 = 3,423.68/x
  3. Step 3: Cross multiply
    7,808.48x = 11,715.36 × 3,423.68
  4. Step 4: Simplify right side
    7,808.48x = 40,109,643.72
  5. Step 5: Solve for x
    x = 40,109,643.72/7,808.48
  6. Step 6: Final answer
    x = 5,136.68

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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.