Home / 8,402.08-11,581.68-6,406.24

Finding the Fourth Proportional to 8,402.08, 11,581.68 and 6,406.24

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Solution

The fourth proportional to 8,402.08, 11,581.68 and 6,406.24 is: 8,830.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,402.08 : 11,581.68 = 6,406.24 : x
  2. Step 2: Convert to fraction form
    8,402.08/11,581.68 = 6,406.24/x
  3. Step 3: Cross multiply
    8,402.08x = 11,581.68 × 6,406.24
  4. Step 4: Simplify right side
    8,402.08x = 74,195,021.68
  5. Step 5: Solve for x
    x = 74,195,021.68/8,402.08
  6. Step 6: Final answer
    x = 8,830.55

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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.