Home / 6,428.08-8,869.32-4,073.20

Finding the Fourth Proportional to 6,428.08, 8,869.32 and 4,073.20

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Solution

The fourth proportional to 6,428.08, 8,869.32 and 4,073.20 is: 5,620.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,428.08 : 8,869.32 = 4,073.20 : x
  2. Step 2: Convert to fraction form
    6,428.08/8,869.32 = 4,073.20/x
  3. Step 3: Cross multiply
    6,428.08x = 8,869.32 × 4,073.20
  4. Step 4: Simplify right side
    6,428.08x = 36,126,514.22
  5. Step 5: Solve for x
    x = 36,126,514.22/6,428.08
  6. Step 6: Final answer
    x = 5,620.11

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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.