Home / 5,416.17-7,475.56-3,178.76

Finding the Fourth Proportional to 5,416.17, 7,475.56 and 3,178.76

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Solution

The fourth proportional to 5,416.17, 7,475.56 and 3,178.76 is: 4,387.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,416.17 : 7,475.56 = 3,178.76 : x
  2. Step 2: Convert to fraction form
    5,416.17/7,475.56 = 3,178.76/x
  3. Step 3: Cross multiply
    5,416.17x = 7,475.56 × 3,178.76
  4. Step 4: Simplify right side
    5,416.17x = 23,763,007.83
  5. Step 5: Solve for x
    x = 23,763,007.83/5,416.17
  6. Step 6: Final answer
    x = 4,387.42

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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.