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Finding the Fourth Proportional to 8,392.05, 11,580.81 and 4,615.60

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Solution

The fourth proportional to 8,392.05, 11,580.81 and 4,615.60 is: 6,369.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,392.05 : 11,580.81 = 4,615.60 : x
  2. Step 2: Convert to fraction form
    8,392.05/11,580.81 = 4,615.60/x
  3. Step 3: Cross multiply
    8,392.05x = 11,580.81 × 4,615.60
  4. Step 4: Simplify right side
    8,392.05x = 53,452,386.64
  5. Step 5: Solve for x
    x = 53,452,386.64/8,392.05
  6. Step 6: Final answer
    x = 6,369.41

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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.