Home / 5,178.30-7,146.08-3,188.36

Finding the Fourth Proportional to 5,178.30, 7,146.08 and 3,188.36

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Solution

The fourth proportional to 5,178.30, 7,146.08 and 3,188.36 is: 4,399.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,178.30 : 7,146.08 = 3,188.36 : x
  2. Step 2: Convert to fraction form
    5,178.30/7,146.08 = 3,188.36/x
  3. Step 3: Cross multiply
    5,178.30x = 7,146.08 × 3,188.36
  4. Step 4: Simplify right side
    5,178.30x = 22,784,275.63
  5. Step 5: Solve for x
    x = 22,784,275.63/5,178.30
  6. Step 6: Final answer
    x = 4,399.95

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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.