Home / 5,129.98-7,077.48-3,935.18

Finding the Fourth Proportional to 5,129.98, 7,077.48 and 3,935.18

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Solution

The fourth proportional to 5,129.98, 7,077.48 and 3,935.18 is: 5,429.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,129.98 : 7,077.48 = 3,935.18 : x
  2. Step 2: Convert to fraction form
    5,129.98/7,077.48 = 3,935.18/x
  3. Step 3: Cross multiply
    5,129.98x = 7,077.48 × 3,935.18
  4. Step 4: Simplify right side
    5,129.98x = 27,851,157.75
  5. Step 5: Solve for x
    x = 27,851,157.75/5,129.98
  6. Step 6: Final answer
    x = 5,429.10

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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.