Home / 8,071.29-11,143.35-6,399.45

Finding the Fourth Proportional to 8,071.29, 11,143.35 and 6,399.45

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Solution

The fourth proportional to 8,071.29, 11,143.35 and 6,399.45 is: 8,835.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,071.29 : 11,143.35 = 6,399.45 : x
  2. Step 2: Convert to fraction form
    8,071.29/11,143.35 = 6,399.45/x
  3. Step 3: Cross multiply
    8,071.29x = 11,143.35 × 6,399.45
  4. Step 4: Simplify right side
    8,071.29x = 71,311,311.16
  5. Step 5: Solve for x
    x = 71,311,311.16/8,071.29
  6. Step 6: Final answer
    x = 8,835.18

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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.