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Finding the Fourth Proportional to 8,779.34, 12,115.36 and 4,800.44

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Solution

The fourth proportional to 8,779.34, 12,115.36 and 4,800.44 is: 6,624.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,779.34 : 12,115.36 = 4,800.44 : x
  2. Step 2: Convert to fraction form
    8,779.34/12,115.36 = 4,800.44/x
  3. Step 3: Cross multiply
    8,779.34x = 12,115.36 × 4,800.44
  4. Step 4: Simplify right side
    8,779.34x = 58,159,058.76
  5. Step 5: Solve for x
    x = 58,159,058.76/8,779.34
  6. Step 6: Final answer
    x = 6,624.54

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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.