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Finding the Fourth Proportional to 8,548.40, 11,783.86 and 6,656.65

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Solution

The fourth proportional to 8,548.40, 11,783.86 and 6,656.65 is: 9,176.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,548.40 : 11,783.86 = 6,656.65 : x
  2. Step 2: Convert to fraction form
    8,548.40/11,783.86 = 6,656.65/x
  3. Step 3: Cross multiply
    8,548.40x = 11,783.86 × 6,656.65
  4. Step 4: Simplify right side
    8,548.40x = 78,440,985.57
  5. Step 5: Solve for x
    x = 78,440,985.57/8,548.40
  6. Step 6: Final answer
    x = 9,176.10

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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.