Home / 3,131.51-4,320.46-1,804.96

Finding the Fourth Proportional to 3,131.51, 4,320.46 and 1,804.96

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Solution

The fourth proportional to 3,131.51, 4,320.46 and 1,804.96 is: 2,490.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,131.51 : 4,320.46 = 1,804.96 : x
  2. Step 2: Convert to fraction form
    3,131.51/4,320.46 = 1,804.96/x
  3. Step 3: Cross multiply
    3,131.51x = 4,320.46 × 1,804.96
  4. Step 4: Simplify right side
    3,131.51x = 7,798,258.06
  5. Step 5: Solve for x
    x = 7,798,258.06/3,131.51
  6. Step 6: Final answer
    x = 2,490.25

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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.