Home / 3,897.15-5,379.21-2,718.60

Finding the Fourth Proportional to 3,897.15, 5,379.21 and 2,718.60

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Solution

The fourth proportional to 3,897.15, 5,379.21 and 2,718.60 is: 3,752.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,897.15 : 5,379.21 = 2,718.60 : x
  2. Step 2: Convert to fraction form
    3,897.15/5,379.21 = 2,718.60/x
  3. Step 3: Cross multiply
    3,897.15x = 5,379.21 × 2,718.60
  4. Step 4: Simplify right side
    3,897.15x = 14,623,920.31
  5. Step 5: Solve for x
    x = 14,623,920.31/3,897.15
  6. Step 6: Final answer
    x = 3,752.47

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1.5x scale

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.