Home / 6,720.18-10,078.96-6,386.79

Finding the Fourth Proportional to 6,720.18, 10,078.96 and 6,386.79

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Solution

The fourth proportional to 6,720.18, 10,078.96 and 6,386.79 is: 9,578.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,720.18 : 10,078.96 = 6,386.79 : x
  2. Step 2: Convert to fraction form
    6,720.18/10,078.96 = 6,386.79/x
  3. Step 3: Cross multiply
    6,720.18x = 10,078.96 × 6,386.79
  4. Step 4: Simplify right side
    6,720.18x = 64,372,200.94
  5. Step 5: Solve for x
    x = 64,372,200.94/6,720.18
  6. Step 6: Final answer
    x = 9,578.94

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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.