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Finding the Fourth Proportional to 5,129.52, 7,058.64 and 4,977.60

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Solution

The fourth proportional to 5,129.52, 7,058.64 and 4,977.60 is: 6,849.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,129.52 : 7,058.64 = 4,977.60 : x
  2. Step 2: Convert to fraction form
    5,129.52/7,058.64 = 4,977.60/x
  3. Step 3: Cross multiply
    5,129.52x = 7,058.64 × 4,977.60
  4. Step 4: Simplify right side
    5,129.52x = 35,135,086.46
  5. Step 5: Solve for x
    x = 35,135,086.46/5,129.52
  6. Step 6: Final answer
    x = 6,849.59

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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.