Home / 6,581.40-9,081.33-3,928.77

Finding the Fourth Proportional to 6,581.40, 9,081.33 and 3,928.77

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Solution

The fourth proportional to 6,581.40, 9,081.33 and 3,928.77 is: 5,421.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,581.40 : 9,081.33 = 3,928.77 : x
  2. Step 2: Convert to fraction form
    6,581.40/9,081.33 = 3,928.77/x
  3. Step 3: Cross multiply
    6,581.40x = 9,081.33 × 3,928.77
  4. Step 4: Simplify right side
    6,581.40x = 35,678,456.86
  5. Step 5: Solve for x
    x = 35,678,456.86/6,581.40
  6. Step 6: Final answer
    x = 5,421.10

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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.