Home / 5,178.53-7,145.96-2,940

Finding the Fourth Proportional to 5,178.53, 7,145.96 and 2,940

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Solution

The fourth proportional to 5,178.53, 7,145.96 and 2,940 is: 4,056.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,178.53 : 7,145.96 = 2,940 : x
  2. Step 2: Convert to fraction form
    5,178.53/7,145.96 = 2,940/x
  3. Step 3: Cross multiply
    5,178.53x = 7,145.96 × 2,940
  4. Step 4: Simplify right side
    5,178.53x = 21,009,122.40
  5. Step 5: Solve for x
    x = 21,009,122.40/5,178.53
  6. Step 6: Final answer
    x = 4,056.97

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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.