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Finding the Fourth Proportional to 7,425.90, 11,054.00 and 7,315.17

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Solution

The fourth proportional to 7,425.90, 11,054.00 and 7,315.17 is: 10,889.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,425.90 : 11,054.00 = 7,315.17 : x
  2. Step 2: Convert to fraction form
    7,425.90/11,054.00 = 7,315.17/x
  3. Step 3: Cross multiply
    7,425.90x = 11,054.00 × 7,315.17
  4. Step 4: Simplify right side
    7,425.90x = 80,861,852.60
  5. Step 5: Solve for x
    x = 80,861,852.60/7,425.90
  6. Step 6: Final answer
    x = 10,889.17

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.