Home / 3,681.36-5,078.98-2,087.77

Finding the Fourth Proportional to 3,681.36, 5,078.98 and 2,087.77

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Solution

The fourth proportional to 3,681.36, 5,078.98 and 2,087.77 is: 2,880.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,681.36 : 5,078.98 = 2,087.77 : x
  2. Step 2: Convert to fraction form
    3,681.36/5,078.98 = 2,087.77/x
  3. Step 3: Cross multiply
    3,681.36x = 5,078.98 × 2,087.77
  4. Step 4: Simplify right side
    3,681.36x = 10,603,742.07
  5. Step 5: Solve for x
    x = 10,603,742.07/3,681.36
  6. Step 6: Final answer
    x = 2,880.39

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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.