Home / 3,871.77-5,347.40-2,618.01

Finding the Fourth Proportional to 3,871.77, 5,347.40 and 2,618.01

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Solution

The fourth proportional to 3,871.77, 5,347.40 and 2,618.01 is: 3,615.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,871.77 : 5,347.40 = 2,618.01 : x
  2. Step 2: Convert to fraction form
    3,871.77/5,347.40 = 2,618.01/x
  3. Step 3: Cross multiply
    3,871.77x = 5,347.40 × 2,618.01
  4. Step 4: Simplify right side
    3,871.77x = 13,999,546.67
  5. Step 5: Solve for x
    x = 13,999,546.67/3,871.77
  6. Step 6: Final answer
    x = 3,615.80

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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.