Home / 3,630.09-5,445.90-1,290.45

Finding the Fourth Proportional to 3,630.09, 5,445.90 and 1,290.45

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Solution

The fourth proportional to 3,630.09, 5,445.90 and 1,290.45 is: 1,935.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,630.09 : 5,445.90 = 1,290.45 : x
  2. Step 2: Convert to fraction form
    3,630.09/5,445.90 = 1,290.45/x
  3. Step 3: Cross multiply
    3,630.09x = 5,445.90 × 1,290.45
  4. Step 4: Simplify right side
    3,630.09x = 7,027,661.66
  5. Step 5: Solve for x
    x = 7,027,661.66/3,630.09
  6. Step 6: Final answer
    x = 1,935.95

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.