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Finding the Fourth Proportional to 9,359.66, 12,900.95 and 6,635.13

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Solution

The fourth proportional to 9,359.66, 12,900.95 and 6,635.13 is: 9,145.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,359.66 : 12,900.95 = 6,635.13 : x
  2. Step 2: Convert to fraction form
    9,359.66/12,900.95 = 6,635.13/x
  3. Step 3: Cross multiply
    9,359.66x = 12,900.95 × 6,635.13
  4. Step 4: Simplify right side
    9,359.66x = 85,599,461.02
  5. Step 5: Solve for x
    x = 85,599,461.02/9,359.66
  6. Step 6: Final answer
    x = 9,145.57

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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.