Home / 3,133.80-4,325.40-1,808.28

Finding the Fourth Proportional to 3,133.80, 4,325.40 and 1,808.28

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Solution

The fourth proportional to 3,133.80, 4,325.40 and 1,808.28 is: 2,495.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,133.80 : 4,325.40 = 1,808.28 : x
  2. Step 2: Convert to fraction form
    3,133.80/4,325.40 = 1,808.28/x
  3. Step 3: Cross multiply
    3,133.80x = 4,325.40 × 1,808.28
  4. Step 4: Simplify right side
    3,133.80x = 7,821,534.31
  5. Step 5: Solve for x
    x = 7,821,534.31/3,133.80
  6. Step 6: Final answer
    x = 2,495.86

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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.