Home / 7,320.08-10,981.20-3,424.16

Finding the Fourth Proportional to 7,320.08, 10,981.20 and 3,424.16

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Solution

The fourth proportional to 7,320.08, 10,981.20 and 3,424.16 is: 5,136.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,320.08 : 10,981.20 = 3,424.16 : x
  2. Step 2: Convert to fraction form
    7,320.08/10,981.20 = 3,424.16/x
  3. Step 3: Cross multiply
    7,320.08x = 10,981.20 × 3,424.16
  4. Step 4: Simplify right side
    7,320.08x = 37,601,385.79
  5. Step 5: Solve for x
    x = 37,601,385.79/7,320.08
  6. Step 6: Final answer
    x = 5,136.75

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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.