Home / 8,905.36-13,353.54-5,208.79

Finding the Fourth Proportional to 8,905.36, 13,353.54 and 5,208.79

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Solution

The fourth proportional to 8,905.36, 13,353.54 and 5,208.79 is: 7,810.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,905.36 : 13,353.54 = 5,208.79 : x
  2. Step 2: Convert to fraction form
    8,905.36/13,353.54 = 5,208.79/x
  3. Step 3: Cross multiply
    8,905.36x = 13,353.54 × 5,208.79
  4. Step 4: Simplify right side
    8,905.36x = 69,555,785.62
  5. Step 5: Solve for x
    x = 69,555,785.62/8,905.36
  6. Step 6: Final answer
    x = 7,810.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.