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Finding the Fourth Proportional to 7,030.20, 9,691.98 and 5,618.64

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Solution

The fourth proportional to 7,030.20, 9,691.98 and 5,618.64 is: 7,745.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,030.20 : 9,691.98 = 5,618.64 : x
  2. Step 2: Convert to fraction form
    7,030.20/9,691.98 = 5,618.64/x
  3. Step 3: Cross multiply
    7,030.20x = 9,691.98 × 5,618.64
  4. Step 4: Simplify right side
    7,030.20x = 54,455,746.51
  5. Step 5: Solve for x
    x = 54,455,746.51/7,030.20
  6. Step 6: Final answer
    x = 7,745.97

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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.