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Finding the Fourth Proportional to 9,779.12, 14,651.64 and 8,146.16

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Solution

The fourth proportional to 9,779.12, 14,651.64 and 8,146.16 is: 12,205.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,779.12 : 14,651.64 = 8,146.16 : x
  2. Step 2: Convert to fraction form
    9,779.12/14,651.64 = 8,146.16/x
  3. Step 3: Cross multiply
    9,779.12x = 14,651.64 × 8,146.16
  4. Step 4: Simplify right side
    9,779.12x = 119,354,603.70
  5. Step 5: Solve for x
    x = 119,354,603.70/9,779.12
  6. Step 6: Final answer
    x = 12,205.05

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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.