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Finding the Fourth Proportional to 8,779.55, 12,095.03 and 6,122.21

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Solution

The fourth proportional to 8,779.55, 12,095.03 and 6,122.21 is: 8,434.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,779.55 : 12,095.03 = 6,122.21 : x
  2. Step 2: Convert to fraction form
    8,779.55/12,095.03 = 6,122.21/x
  3. Step 3: Cross multiply
    8,779.55x = 12,095.03 × 6,122.21
  4. Step 4: Simplify right side
    8,779.55x = 74,048,268.45
  5. Step 5: Solve for x
    x = 74,048,268.45/8,779.55
  6. Step 6: Final answer
    x = 8,434.18

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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.