Home / 7,142.66-10,718.02-2,760.42

Finding the Fourth Proportional to 7,142.66, 10,718.02 and 2,760.42

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Solution

The fourth proportional to 7,142.66, 10,718.02 and 2,760.42 is: 4,142.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,142.66 : 10,718.02 = 2,760.42 : x
  2. Step 2: Convert to fraction form
    7,142.66/10,718.02 = 2,760.42/x
  3. Step 3: Cross multiply
    7,142.66x = 10,718.02 × 2,760.42
  4. Step 4: Simplify right side
    7,142.66x = 29,586,236.77
  5. Step 5: Solve for x
    x = 29,586,236.77/7,142.66
  6. Step 6: Final answer
    x = 4,142.19

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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.