Home / 8,779.07-12,115.11-4,800.21

Finding the Fourth Proportional to 8,779.07, 12,115.11 and 4,800.21

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Solution

The fourth proportional to 8,779.07, 12,115.11 and 4,800.21 is: 6,624.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,779.07 : 12,115.11 = 4,800.21 : x
  2. Step 2: Convert to fraction form
    8,779.07/12,115.11 = 4,800.21/x
  3. Step 3: Cross multiply
    8,779.07x = 12,115.11 × 4,800.21
  4. Step 4: Simplify right side
    8,779.07x = 58,154,987.60
  5. Step 5: Solve for x
    x = 58,154,987.60/8,779.07
  6. Step 6: Final answer
    x = 6,624.28

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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.