Home / 3,874.89-5,347.45-2,106.60

Finding the Fourth Proportional to 3,874.89, 5,347.45 and 2,106.60

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Solution

The fourth proportional to 3,874.89, 5,347.45 and 2,106.60 is: 2,907.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,874.89 : 5,347.45 = 2,106.60 : x
  2. Step 2: Convert to fraction form
    3,874.89/5,347.45 = 2,106.60/x
  3. Step 3: Cross multiply
    3,874.89x = 5,347.45 × 2,106.60
  4. Step 4: Simplify right side
    3,874.89x = 11,264,938.17
  5. Step 5: Solve for x
    x = 11,264,938.17/3,874.89
  6. Step 6: Final answer
    x = 2,907.16

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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.