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Finding the Fourth Proportional to 8,478.51, 11,701.04 and 4,702.86

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Solution

The fourth proportional to 8,478.51, 11,701.04 and 4,702.86 is: 6,490.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,478.51 : 11,701.04 = 4,702.86 : x
  2. Step 2: Convert to fraction form
    8,478.51/11,701.04 = 4,702.86/x
  3. Step 3: Cross multiply
    8,478.51x = 11,701.04 × 4,702.86
  4. Step 4: Simplify right side
    8,478.51x = 55,028,352.97
  5. Step 5: Solve for x
    x = 55,028,352.97/8,478.51
  6. Step 6: Final answer
    x = 6,490.33

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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.