Home / 3,120.66-4,681.85-1,365.35

Finding the Fourth Proportional to 3,120.66, 4,681.85 and 1,365.35

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Solution

The fourth proportional to 3,120.66, 4,681.85 and 1,365.35 is: 2,048.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,120.66 : 4,681.85 = 1,365.35 : x
  2. Step 2: Convert to fraction form
    3,120.66/4,681.85 = 1,365.35/x
  3. Step 3: Cross multiply
    3,120.66x = 4,681.85 × 1,365.35
  4. Step 4: Simplify right side
    3,120.66x = 6,392,333.66
  5. Step 5: Solve for x
    x = 6,392,333.66/3,120.66
  6. Step 6: Final answer
    x = 2,048.39

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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.