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Finding the Fourth Proportional to 8,653.36, 12,990.32 and 7,283.74

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Solution

The fourth proportional to 8,653.36, 12,990.32 and 7,283.74 is: 10,934.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,653.36 : 12,990.32 = 7,283.74 : x
  2. Step 2: Convert to fraction form
    8,653.36/12,990.32 = 7,283.74/x
  3. Step 3: Cross multiply
    8,653.36x = 12,990.32 × 7,283.74
  4. Step 4: Simplify right side
    8,653.36x = 94,618,012.03
  5. Step 5: Solve for x
    x = 94,618,012.03/8,653.36
  6. Step 6: Final answer
    x = 10,934.26

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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.