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Finding the Fourth Proportional to 8,779.88, 12,116.25 and 4,801.05

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Solution

The fourth proportional to 8,779.88, 12,116.25 and 4,801.05 is: 6,625.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,779.88 : 12,116.25 = 4,801.05 : x
  2. Step 2: Convert to fraction form
    8,779.88/12,116.25 = 4,801.05/x
  3. Step 3: Cross multiply
    8,779.88x = 12,116.25 × 4,801.05
  4. Step 4: Simplify right side
    8,779.88x = 58,170,722.06
  5. Step 5: Solve for x
    x = 58,170,722.06/8,779.88
  6. Step 6: Final answer
    x = 6,625.46

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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.