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Finding the Fourth Proportional to 7,078.44, 10,564.63 and 6,961.65

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Solution

The fourth proportional to 7,078.44, 10,564.63 and 6,961.65 is: 10,390.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,078.44 : 10,564.63 = 6,961.65 : x
  2. Step 2: Convert to fraction form
    7,078.44/10,564.63 = 6,961.65/x
  3. Step 3: Cross multiply
    7,078.44x = 10,564.63 × 6,961.65
  4. Step 4: Simplify right side
    7,078.44x = 73,547,199.42
  5. Step 5: Solve for x
    x = 73,547,199.42/7,078.44
  6. Step 6: Final answer
    x = 10,390.31

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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.