Home / 3,640.85-5,461.82-1,175.21

Finding the Fourth Proportional to 3,640.85, 5,461.82 and 1,175.21

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Solution

The fourth proportional to 3,640.85, 5,461.82 and 1,175.21 is: 1,762.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,640.85 : 5,461.82 = 1,175.21 : x
  2. Step 2: Convert to fraction form
    3,640.85/5,461.82 = 1,175.21/x
  3. Step 3: Cross multiply
    3,640.85x = 5,461.82 × 1,175.21
  4. Step 4: Simplify right side
    3,640.85x = 6,418,779.61
  5. Step 5: Solve for x
    x = 6,418,779.61/3,640.85
  6. Step 6: Final answer
    x = 1,762.99

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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.