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Finding the Fourth Proportional to 8,915.16, 12,301.11 and 4,935.99

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Solution

The fourth proportional to 8,915.16, 12,301.11 and 4,935.99 is: 6,810.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,915.16 : 12,301.11 = 4,935.99 : x
  2. Step 2: Convert to fraction form
    8,915.16/12,301.11 = 4,935.99/x
  3. Step 3: Cross multiply
    8,915.16x = 12,301.11 × 4,935.99
  4. Step 4: Simplify right side
    8,915.16x = 60,718,155.95
  5. Step 5: Solve for x
    x = 60,718,155.95/8,915.16
  6. Step 6: Final answer
    x = 6,810.66

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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.