Home / 8,779.12-13,155.68-4,878.16

Finding the Fourth Proportional to 8,779.12, 13,155.68 and 4,878.16

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Solution

The fourth proportional to 8,779.12, 13,155.68 and 4,878.16 is: 7,310.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,779.12 : 13,155.68 = 4,878.16 : x
  2. Step 2: Convert to fraction form
    8,779.12/13,155.68 = 4,878.16/x
  3. Step 3: Cross multiply
    8,779.12x = 13,155.68 × 4,878.16
  4. Step 4: Simplify right side
    8,779.12x = 64,175,511.95
  5. Step 5: Solve for x
    x = 64,175,511.95/8,779.12
  6. Step 6: Final answer
    x = 7,310.02

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.