Home / 7,308.20-10,111.56-6,379.40

Finding the Fourth Proportional to 7,308.20, 10,111.56 and 6,379.40

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Solution

The fourth proportional to 7,308.20, 10,111.56 and 6,379.40 is: 8,826.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,308.20 : 10,111.56 = 6,379.40 : x
  2. Step 2: Convert to fraction form
    7,308.20/10,111.56 = 6,379.40/x
  3. Step 3: Cross multiply
    7,308.20x = 10,111.56 × 6,379.40
  4. Step 4: Simplify right side
    7,308.20x = 64,505,685.86
  5. Step 5: Solve for x
    x = 64,505,685.86/7,308.20
  6. Step 6: Final answer
    x = 8,826.48

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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.