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Finding the Fourth Proportional to 7,190.03, 9,900.79 and 7,026.28

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Solution

The fourth proportional to 7,190.03, 9,900.79 and 7,026.28 is: 9,675.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,190.03 : 9,900.79 = 7,026.28 : x
  2. Step 2: Convert to fraction form
    7,190.03/9,900.79 = 7,026.28/x
  3. Step 3: Cross multiply
    7,190.03x = 9,900.79 × 7,026.28
  4. Step 4: Simplify right side
    7,190.03x = 69,565,680.44
  5. Step 5: Solve for x
    x = 69,565,680.44/7,190.03
  6. Step 6: Final answer
    x = 9,675.29

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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.