Home / 3,690.61-5,514.32-3,561.45

Finding the Fourth Proportional to 3,690.61, 5,514.32 and 3,561.45

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Solution

The fourth proportional to 3,690.61, 5,514.32 and 3,561.45 is: 5,321.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,690.61 : 5,514.32 = 3,561.45 : x
  2. Step 2: Convert to fraction form
    3,690.61/5,514.32 = 3,561.45/x
  3. Step 3: Cross multiply
    3,690.61x = 5,514.32 × 3,561.45
  4. Step 4: Simplify right side
    3,690.61x = 19,638,963.19
  5. Step 5: Solve for x
    x = 19,638,963.19/3,690.61
  6. Step 6: Final answer
    x = 5,321.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.