Home / 3,056.64-4,218.72-1,815.36

Finding the Fourth Proportional to 3,056.64, 4,218.72 and 1,815.36

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Solution

The fourth proportional to 3,056.64, 4,218.72 and 1,815.36 is: 2,505.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,056.64 : 4,218.72 = 1,815.36 : x
  2. Step 2: Convert to fraction form
    3,056.64/4,218.72 = 1,815.36/x
  3. Step 3: Cross multiply
    3,056.64x = 4,218.72 × 1,815.36
  4. Step 4: Simplify right side
    3,056.64x = 7,658,495.54
  5. Step 5: Solve for x
    x = 7,658,495.54/3,056.64
  6. Step 6: Final answer
    x = 2,505.53

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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.