Home / 2,087.78-2,877.77-1,415.36

Finding the Fourth Proportional to 2,087.78, 2,877.77 and 1,415.36

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Solution

The fourth proportional to 2,087.78, 2,877.77 and 1,415.36 is: 1,950.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,087.78 : 2,877.77 = 1,415.36 : x
  2. Step 2: Convert to fraction form
    2,087.78/2,877.77 = 1,415.36/x
  3. Step 3: Cross multiply
    2,087.78x = 2,877.77 × 1,415.36
  4. Step 4: Simplify right side
    2,087.78x = 4,073,091.28
  5. Step 5: Solve for x
    x = 4,073,091.28/2,087.78
  6. Step 6: Final answer
    x = 1,950.92

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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.