Home / 2,111.07-3,163.55-876.95

Finding the Fourth Proportional to 2,111.07, 3,163.55 and 876.95

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Solution

The fourth proportional to 2,111.07, 3,163.55 and 876.95 is: 1,314.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,111.07 : 3,163.55 = 876.95 : x
  2. Step 2: Convert to fraction form
    2,111.07/3,163.55 = 876.95/x
  3. Step 3: Cross multiply
    2,111.07x = 3,163.55 × 876.95
  4. Step 4: Simplify right side
    2,111.07x = 2,774,254.97
  5. Step 5: Solve for x
    x = 2,774,254.97/2,111.07
  6. Step 6: Final answer
    x = 1,314.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.