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Finding the Fourth Proportional to 6,600.72, 9,881.64 and 6,315.60

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Solution

The fourth proportional to 6,600.72, 9,881.64 and 6,315.60 is: 9,454.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,600.72 : 9,881.64 = 6,315.60 : x
  2. Step 2: Convert to fraction form
    6,600.72/9,881.64 = 6,315.60/x
  3. Step 3: Cross multiply
    6,600.72x = 9,881.64 × 6,315.60
  4. Step 4: Simplify right side
    6,600.72x = 62,408,485.58
  5. Step 5: Solve for x
    x = 62,408,485.58/6,600.72
  6. Step 6: Final answer
    x = 9,454.80

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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.