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Finding the Fourth Proportional to 8,887.86, 13,311.74 and 6,897.59

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Solution

The fourth proportional to 8,887.86, 13,311.74 and 6,897.59 is: 10,330.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,887.86 : 13,311.74 = 6,897.59 : x
  2. Step 2: Convert to fraction form
    8,887.86/13,311.74 = 6,897.59/x
  3. Step 3: Cross multiply
    8,887.86x = 13,311.74 × 6,897.59
  4. Step 4: Simplify right side
    8,887.86x = 91,818,925.31
  5. Step 5: Solve for x
    x = 91,818,925.31/8,887.86
  6. Step 6: Final answer
    x = 10,330.82

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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.