Home / 3,907.84-5,391.75-2,511.40

Finding the Fourth Proportional to 3,907.84, 5,391.75 and 2,511.40

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Solution

The fourth proportional to 3,907.84, 5,391.75 and 2,511.40 is: 3,465.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,907.84 : 5,391.75 = 2,511.40 : x
  2. Step 2: Convert to fraction form
    3,907.84/5,391.75 = 2,511.40/x
  3. Step 3: Cross multiply
    3,907.84x = 5,391.75 × 2,511.40
  4. Step 4: Simplify right side
    3,907.84x = 13,540,840.95
  5. Step 5: Solve for x
    x = 13,540,840.95/3,907.84
  6. Step 6: Final answer
    x = 3,465.04

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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.