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Finding the Fourth Proportional to 8,646.95, 12,969.14 and 2,406.31

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Solution

The fourth proportional to 8,646.95, 12,969.14 and 2,406.31 is: 3,609.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,646.95 : 12,969.14 = 2,406.31 : x
  2. Step 2: Convert to fraction form
    8,646.95/12,969.14 = 2,406.31/x
  3. Step 3: Cross multiply
    8,646.95x = 12,969.14 × 2,406.31
  4. Step 4: Simplify right side
    8,646.95x = 31,207,726.82
  5. Step 5: Solve for x
    x = 31,207,726.82/8,646.95
  6. Step 6: Final answer
    x = 3,609.10

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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.