Home / 3,130.46-4,319.88-1,804.35

Finding the Fourth Proportional to 3,130.46, 4,319.88 and 1,804.35

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Solution

The fourth proportional to 3,130.46, 4,319.88 and 1,804.35 is: 2,489.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,130.46 : 4,319.88 = 1,804.35 : x
  2. Step 2: Convert to fraction form
    3,130.46/4,319.88 = 1,804.35/x
  3. Step 3: Cross multiply
    3,130.46x = 4,319.88 × 1,804.35
  4. Step 4: Simplify right side
    3,130.46x = 7,794,575.48
  5. Step 5: Solve for x
    x = 7,794,575.48/3,130.46
  6. Step 6: Final answer
    x = 2,489.91

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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.