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Finding the Fourth Proportional to 8,347.89, 12,551.85 and 7,697.72

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Solution

The fourth proportional to 8,347.89, 12,551.85 and 7,697.72 is: 11,574.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,347.89 : 12,551.85 = 7,697.72 : x
  2. Step 2: Convert to fraction form
    8,347.89/12,551.85 = 7,697.72/x
  3. Step 3: Cross multiply
    8,347.89x = 12,551.85 × 7,697.72
  4. Step 4: Simplify right side
    8,347.89x = 96,620,564.02
  5. Step 5: Solve for x
    x = 96,620,564.02/8,347.89
  6. Step 6: Final answer
    x = 11,574.25

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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.