Home / 5,178.36-7,147.50-3,054.12

Finding the Fourth Proportional to 5,178.36, 7,147.50 and 3,054.12

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Solution

The fourth proportional to 5,178.36, 7,147.50 and 3,054.12 is: 4,215.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,178.36 : 7,147.50 = 3,054.12 : x
  2. Step 2: Convert to fraction form
    5,178.36/7,147.50 = 3,054.12/x
  3. Step 3: Cross multiply
    5,178.36x = 7,147.50 × 3,054.12
  4. Step 4: Simplify right side
    5,178.36x = 21,829,322.70
  5. Step 5: Solve for x
    x = 21,829,322.70/5,178.36
  6. Step 6: Final answer
    x = 4,215.49

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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.