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Finding the Fourth Proportional to 7,117.40, 10,676.10 and 7,068.80

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Solution

The fourth proportional to 7,117.40, 10,676.10 and 7,068.80 is: 10,603.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,117.40 : 10,676.10 = 7,068.80 : x
  2. Step 2: Convert to fraction form
    7,117.40/10,676.10 = 7,068.80/x
  3. Step 3: Cross multiply
    7,117.40x = 10,676.10 × 7,068.80
  4. Step 4: Simplify right side
    7,117.40x = 75,467,215.68
  5. Step 5: Solve for x
    x = 75,467,215.68/7,117.40
  6. Step 6: Final answer
    x = 10,603.20

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.