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Finding the Fourth Proportional to 7,030.19, 9,691.97 and 5,618.63

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Solution

The fourth proportional to 7,030.19, 9,691.97 and 5,618.63 is: 7,745.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,030.19 : 9,691.97 = 5,618.63 : x
  2. Step 2: Convert to fraction form
    7,030.19/9,691.97 = 5,618.63/x
  3. Step 3: Cross multiply
    7,030.19x = 9,691.97 × 5,618.63
  4. Step 4: Simplify right side
    7,030.19x = 54,455,516.85
  5. Step 5: Solve for x
    x = 54,455,516.85/7,030.19
  6. Step 6: Final answer
    x = 7,745.96

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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.