Home / 8,911.36-13,362.54-5,214.70

Finding the Fourth Proportional to 8,911.36, 13,362.54 and 5,214.70

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Solution

The fourth proportional to 8,911.36, 13,362.54 and 5,214.70 is: 7,819.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,911.36 : 13,362.54 = 5,214.70 : x
  2. Step 2: Convert to fraction form
    8,911.36/13,362.54 = 5,214.70/x
  3. Step 3: Cross multiply
    8,911.36x = 13,362.54 × 5,214.70
  4. Step 4: Simplify right side
    8,911.36x = 69,681,637.34
  5. Step 5: Solve for x
    x = 69,681,637.34/8,911.36
  6. Step 6: Final answer
    x = 7,819.42

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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.