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Finding the Fourth Proportional to 8,966.99, 13,447.14 and 2,639.99

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Solution

The fourth proportional to 8,966.99, 13,447.14 and 2,639.99 is: 3,959.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,966.99 : 13,447.14 = 2,639.99 : x
  2. Step 2: Convert to fraction form
    8,966.99/13,447.14 = 2,639.99/x
  3. Step 3: Cross multiply
    8,966.99x = 13,447.14 × 2,639.99
  4. Step 4: Simplify right side
    8,966.99x = 35,500,315.13
  5. Step 5: Solve for x
    x = 35,500,315.13/8,966.99
  6. Step 6: Final answer
    x = 3,959.00

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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.