Home / 3,130.70-4,319.42-1,804.37

Finding the Fourth Proportional to 3,130.70, 4,319.42 and 1,804.37

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Solution

The fourth proportional to 3,130.70, 4,319.42 and 1,804.37 is: 2,489.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,130.70 : 4,319.42 = 1,804.37 : x
  2. Step 2: Convert to fraction form
    3,130.70/4,319.42 = 1,804.37/x
  3. Step 3: Cross multiply
    3,130.70x = 4,319.42 × 1,804.37
  4. Step 4: Simplify right side
    3,130.70x = 7,793,801.25
  5. Step 5: Solve for x
    x = 7,793,801.25/3,130.70
  6. Step 6: Final answer
    x = 2,489.48

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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.