Home / 3,120.47-4,677.36-1,557.39

Finding the Fourth Proportional to 3,120.47, 4,677.36 and 1,557.39

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Solution

The fourth proportional to 3,120.47, 4,677.36 and 1,557.39 is: 2,334.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,120.47 : 4,677.36 = 1,557.39 : x
  2. Step 2: Convert to fraction form
    3,120.47/4,677.36 = 1,557.39/x
  3. Step 3: Cross multiply
    3,120.47x = 4,677.36 × 1,557.39
  4. Step 4: Simplify right side
    3,120.47x = 7,284,473.69
  5. Step 5: Solve for x
    x = 7,284,473.69/3,120.47
  6. Step 6: Final answer
    x = 2,334.42

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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.