Home / 7,151.02-10,728.05-2,153.54

Finding the Fourth Proportional to 7,151.02, 10,728.05 and 2,153.54

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Solution

The fourth proportional to 7,151.02, 10,728.05 and 2,153.54 is: 3,230.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,151.02 : 10,728.05 = 2,153.54 : x
  2. Step 2: Convert to fraction form
    7,151.02/10,728.05 = 2,153.54/x
  3. Step 3: Cross multiply
    7,151.02x = 10,728.05 × 2,153.54
  4. Step 4: Simplify right side
    7,151.02x = 23,103,300.85
  5. Step 5: Solve for x
    x = 23,103,300.85/7,151.02
  6. Step 6: Final answer
    x = 3,230.77

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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.