Home / 8,065.64-11,129.92-4,480.20

Finding the Fourth Proportional to 8,065.64, 11,129.92 and 4,480.20

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Solution

The fourth proportional to 8,065.64, 11,129.92 and 4,480.20 is: 6,182.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,065.64 : 11,129.92 = 4,480.20 : x
  2. Step 2: Convert to fraction form
    8,065.64/11,129.92 = 4,480.20/x
  3. Step 3: Cross multiply
    8,065.64x = 11,129.92 × 4,480.20
  4. Step 4: Simplify right side
    8,065.64x = 49,864,267.58
  5. Step 5: Solve for x
    x = 49,864,267.58/8,065.64
  6. Step 6: Final answer
    x = 6,182.31

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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.