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Finding the Fourth Proportional to 8,618.03, 12,928.26 and 3,070.19

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Solution

The fourth proportional to 8,618.03, 12,928.26 and 3,070.19 is: 4,605.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,618.03 : 12,928.26 = 3,070.19 : x
  2. Step 2: Convert to fraction form
    8,618.03/12,928.26 = 3,070.19/x
  3. Step 3: Cross multiply
    8,618.03x = 12,928.26 × 3,070.19
  4. Step 4: Simplify right side
    8,618.03x = 39,692,168.41
  5. Step 5: Solve for x
    x = 39,692,168.41/8,618.03
  6. Step 6: Final answer
    x = 4,605.71

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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.