Home / 7,176.66-9,903.56-3,989.94

Finding the Fourth Proportional to 7,176.66, 9,903.56 and 3,989.94

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Solution

The fourth proportional to 7,176.66, 9,903.56 and 3,989.94 is: 5,505.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,176.66 : 9,903.56 = 3,989.94 : x
  2. Step 2: Convert to fraction form
    7,176.66/9,903.56 = 3,989.94/x
  3. Step 3: Cross multiply
    7,176.66x = 9,903.56 × 3,989.94
  4. Step 4: Simplify right side
    7,176.66x = 39,514,610.19
  5. Step 5: Solve for x
    x = 39,514,610.19/7,176.66
  6. Step 6: Final answer
    x = 5,505.99

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.