Home / 3,601.90-5,405.28-1,261.91

Finding the Fourth Proportional to 3,601.90, 5,405.28 and 1,261.91

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Solution

The fourth proportional to 3,601.90, 5,405.28 and 1,261.91 is: 1,893.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,601.90 : 5,405.28 = 1,261.91 : x
  2. Step 2: Convert to fraction form
    3,601.90/5,405.28 = 1,261.91/x
  3. Step 3: Cross multiply
    3,601.90x = 5,405.28 × 1,261.91
  4. Step 4: Simplify right side
    3,601.90x = 6,820,985.67
  5. Step 5: Solve for x
    x = 6,820,985.67/3,601.90
  6. Step 6: Final answer
    x = 1,893.72

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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.