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Finding the Fourth Proportional to 8,953.66, 13,409.88 and 7,690.06

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Solution

The fourth proportional to 8,953.66, 13,409.88 and 7,690.06 is: 11,517.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,953.66 : 13,409.88 = 7,690.06 : x
  2. Step 2: Convert to fraction form
    8,953.66/13,409.88 = 7,690.06/x
  3. Step 3: Cross multiply
    8,953.66x = 13,409.88 × 7,690.06
  4. Step 4: Simplify right side
    8,953.66x = 103,122,781.79
  5. Step 5: Solve for x
    x = 103,122,781.79/8,953.66
  6. Step 6: Final answer
    x = 11,517.39

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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.