Home / 3,138.64-4,703.80-1,675.60

Finding the Fourth Proportional to 3,138.64, 4,703.80 and 1,675.60

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Solution

The fourth proportional to 3,138.64, 4,703.80 and 1,675.60 is: 2,511.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,138.64 : 4,703.80 = 1,675.60 : x
  2. Step 2: Convert to fraction form
    3,138.64/4,703.80 = 1,675.60/x
  3. Step 3: Cross multiply
    3,138.64x = 4,703.80 × 1,675.60
  4. Step 4: Simplify right side
    3,138.64x = 7,881,687.28
  5. Step 5: Solve for x
    x = 7,881,687.28/3,138.64
  6. Step 6: Final answer
    x = 2,511.18

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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.