Home / 8,415.13-11,611.87-4,877.86

Finding the Fourth Proportional to 8,415.13, 11,611.87 and 4,877.86

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Solution

The fourth proportional to 8,415.13, 11,611.87 and 4,877.86 is: 6,730.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,415.13 : 11,611.87 = 4,877.86 : x
  2. Step 2: Convert to fraction form
    8,415.13/11,611.87 = 4,877.86/x
  3. Step 3: Cross multiply
    8,415.13x = 11,611.87 × 4,877.86
  4. Step 4: Simplify right side
    8,415.13x = 56,641,076.20
  5. Step 5: Solve for x
    x = 56,641,076.20/8,415.13
  6. Step 6: Final answer
    x = 6,730.86

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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.