Home / 8,904.45-12,287.78-5,127.75

Finding the Fourth Proportional to 8,904.45, 12,287.78 and 5,127.75

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Solution

The fourth proportional to 8,904.45, 12,287.78 and 5,127.75 is: 7,076.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,904.45 : 12,287.78 = 5,127.75 : x
  2. Step 2: Convert to fraction form
    8,904.45/12,287.78 = 5,127.75/x
  3. Step 3: Cross multiply
    8,904.45x = 12,287.78 × 5,127.75
  4. Step 4: Simplify right side
    8,904.45x = 63,008,676.71
  5. Step 5: Solve for x
    x = 63,008,676.71/8,904.45
  6. Step 6: Final answer
    x = 7,076.09

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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.