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Finding the Fourth Proportional to 8,948.88, 12,361.68 and 7,268.40

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Solution

The fourth proportional to 8,948.88, 12,361.68 and 7,268.40 is: 10,040.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,948.88 : 12,361.68 = 7,268.40 : x
  2. Step 2: Convert to fraction form
    8,948.88/12,361.68 = 7,268.40/x
  3. Step 3: Cross multiply
    8,948.88x = 12,361.68 × 7,268.40
  4. Step 4: Simplify right side
    8,948.88x = 89,849,634.91
  5. Step 5: Solve for x
    x = 89,849,634.91/8,948.88
  6. Step 6: Final answer
    x = 10,040.32

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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.