Home / 3,876.21-5,345.87-2,616.93

Finding the Fourth Proportional to 3,876.21, 5,345.87 and 2,616.93

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Solution

The fourth proportional to 3,876.21, 5,345.87 and 2,616.93 is: 3,609.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,876.21 : 5,345.87 = 2,616.93 : x
  2. Step 2: Convert to fraction form
    3,876.21/5,345.87 = 2,616.93/x
  3. Step 3: Cross multiply
    3,876.21x = 5,345.87 × 2,616.93
  4. Step 4: Simplify right side
    3,876.21x = 13,989,754.49
  5. Step 5: Solve for x
    x = 13,989,754.49/3,876.21
  6. Step 6: Final answer
    x = 3,609.13

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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.