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Finding the Fourth Proportional to 8,557.72, 11,806.50 and 5,019.64

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Solution

The fourth proportional to 8,557.72, 11,806.50 and 5,019.64 is: 6,925.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,557.72 : 11,806.50 = 5,019.64 : x
  2. Step 2: Convert to fraction form
    8,557.72/11,806.50 = 5,019.64/x
  3. Step 3: Cross multiply
    8,557.72x = 11,806.50 × 5,019.64
  4. Step 4: Simplify right side
    8,557.72x = 59,264,379.66
  5. Step 5: Solve for x
    x = 59,264,379.66/8,557.72
  6. Step 6: Final answer
    x = 6,925.25

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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.