Home / 9,282.20-12,809.78-5,303.80

Finding the Fourth Proportional to 9,282.20, 12,809.78 and 5,303.80

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Solution

The fourth proportional to 9,282.20, 12,809.78 and 5,303.80 is: 7,319.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,282.20 : 12,809.78 = 5,303.80 : x
  2. Step 2: Convert to fraction form
    9,282.20/12,809.78 = 5,303.80/x
  3. Step 3: Cross multiply
    9,282.20x = 12,809.78 × 5,303.80
  4. Step 4: Simplify right side
    9,282.20x = 67,940,511.16
  5. Step 5: Solve for x
    x = 67,940,511.16/9,282.20
  6. Step 6: Final answer
    x = 7,319.44

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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.