Home / 7,176.48-9,903.71-3,989.87

Finding the Fourth Proportional to 7,176.48, 9,903.71 and 3,989.87

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Solution

The fourth proportional to 7,176.48, 9,903.71 and 3,989.87 is: 5,506.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,176.48 : 9,903.71 = 3,989.87 : x
  2. Step 2: Convert to fraction form
    7,176.48/9,903.71 = 3,989.87/x
  3. Step 3: Cross multiply
    7,176.48x = 9,903.71 × 3,989.87
  4. Step 4: Simplify right side
    7,176.48x = 39,514,550.15
  5. Step 5: Solve for x
    x = 39,514,550.15/7,176.48
  6. Step 6: Final answer
    x = 5,506.12

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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.