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Finding the Fourth Proportional to 8,559.54, 11,807.10 and 5,199.66

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Solution

The fourth proportional to 8,559.54, 11,807.10 and 5,199.66 is: 7,172.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,559.54 : 11,807.10 = 5,199.66 : x
  2. Step 2: Convert to fraction form
    8,559.54/11,807.10 = 5,199.66/x
  3. Step 3: Cross multiply
    8,559.54x = 11,807.10 × 5,199.66
  4. Step 4: Simplify right side
    8,559.54x = 61,392,905.59
  5. Step 5: Solve for x
    x = 61,392,905.59/8,559.54
  6. Step 6: Final answer
    x = 7,172.45

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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.