Home / 3,112.71-4,295.48-1,731.36

Finding the Fourth Proportional to 3,112.71, 4,295.48 and 1,731.36

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Solution

The fourth proportional to 3,112.71, 4,295.48 and 1,731.36 is: 2,389.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,112.71 : 4,295.48 = 1,731.36 : x
  2. Step 2: Convert to fraction form
    3,112.71/4,295.48 = 1,731.36/x
  3. Step 3: Cross multiply
    3,112.71x = 4,295.48 × 1,731.36
  4. Step 4: Simplify right side
    3,112.71x = 7,437,013.60
  5. Step 5: Solve for x
    x = 7,437,013.60/3,112.71
  6. Step 6: Final answer
    x = 2,389.24

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1.5x scale

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.