Home / 3,148.64-4,723.56-1,689.42

Finding the Fourth Proportional to 3,148.64, 4,723.56 and 1,689.42

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Solution

The fourth proportional to 3,148.64, 4,723.56 and 1,689.42 is: 2,534.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,148.64 : 4,723.56 = 1,689.42 : x
  2. Step 2: Convert to fraction form
    3,148.64/4,723.56 = 1,689.42/x
  3. Step 3: Cross multiply
    3,148.64x = 4,723.56 × 1,689.42
  4. Step 4: Simplify right side
    3,148.64x = 7,980,076.74
  5. Step 5: Solve for x
    x = 7,980,076.74/3,148.64
  6. Step 6: Final answer
    x = 2,534.45

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.