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Finding the Fourth Proportional to 9,890.76, 14,904.95 and 8,954.00

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Solution

The fourth proportional to 9,890.76, 14,904.95 and 8,954.00 is: 13,493.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,890.76 : 14,904.95 = 8,954.00 : x
  2. Step 2: Convert to fraction form
    9,890.76/14,904.95 = 8,954.00/x
  3. Step 3: Cross multiply
    9,890.76x = 14,904.95 × 8,954.00
  4. Step 4: Simplify right side
    9,890.76x = 133,458,803.01
  5. Step 5: Solve for x
    x = 133,458,803.01/9,890.76
  6. Step 6: Final answer
    x = 13,493.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.