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Finding the Fourth Proportional to 8,646.80, 12,968.77 and 3,099.32

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Solution

The fourth proportional to 8,646.80, 12,968.77 and 3,099.32 is: 4,648.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,646.80 : 12,968.77 = 3,099.32 : x
  2. Step 2: Convert to fraction form
    8,646.80/12,968.77 = 3,099.32/x
  3. Step 3: Cross multiply
    8,646.80x = 12,968.77 × 3,099.32
  4. Step 4: Simplify right side
    8,646.80x = 40,194,368.24
  5. Step 5: Solve for x
    x = 40,194,368.24/8,646.80
  6. Step 6: Final answer
    x = 4,648.47

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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.