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Finding the Fourth Proportional to 8,913.67, 12,307.41 and 6,792.89

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Solution

The fourth proportional to 8,913.67, 12,307.41 and 6,792.89 is: 9,379.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,913.67 : 12,307.41 = 6,792.89 : x
  2. Step 2: Convert to fraction form
    8,913.67/12,307.41 = 6,792.89/x
  3. Step 3: Cross multiply
    8,913.67x = 12,307.41 × 6,792.89
  4. Step 4: Simplify right side
    8,913.67x = 83,602,820.78
  5. Step 5: Solve for x
    x = 83,602,820.78/8,913.67
  6. Step 6: Final answer
    x = 9,379.17

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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.