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Finding the Fourth Proportional to 7,807.74, 10,774.48 and 4,270.72

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Solution

The fourth proportional to 7,807.74, 10,774.48 and 4,270.72 is: 5,893.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,807.74 : 10,774.48 = 4,270.72 : x
  2. Step 2: Convert to fraction form
    7,807.74/10,774.48 = 4,270.72/x
  3. Step 3: Cross multiply
    7,807.74x = 10,774.48 × 4,270.72
  4. Step 4: Simplify right side
    7,807.74x = 46,014,765.87
  5. Step 5: Solve for x
    x = 46,014,765.87/7,807.74
  6. Step 6: Final answer
    x = 5,893.48

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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.