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Finding the Fourth Proportional to 8,916.95, 12,297.26 and 7,657.61

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Solution

The fourth proportional to 8,916.95, 12,297.26 and 7,657.61 is: 10,560.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,916.95 : 12,297.26 = 7,657.61 : x
  2. Step 2: Convert to fraction form
    8,916.95/12,297.26 = 7,657.61/x
  3. Step 3: Cross multiply
    8,916.95x = 12,297.26 × 7,657.61
  4. Step 4: Simplify right side
    8,916.95x = 94,167,578.81
  5. Step 5: Solve for x
    x = 94,167,578.81/8,916.95
  6. Step 6: Final answer
    x = 10,560.52

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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.