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Finding the Fourth Proportional to 8,495.90, 12,686.59 and 6,938.94

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Solution

The fourth proportional to 8,495.90, 12,686.59 and 6,938.94 is: 10,361.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,495.90 : 12,686.59 = 6,938.94 : x
  2. Step 2: Convert to fraction form
    8,495.90/12,686.59 = 6,938.94/x
  3. Step 3: Cross multiply
    8,495.90x = 12,686.59 × 6,938.94
  4. Step 4: Simplify right side
    8,495.90x = 88,031,522.02
  5. Step 5: Solve for x
    x = 88,031,522.02/8,495.90
  6. Step 6: Final answer
    x = 10,361.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.