Home / 2,195.93-3,030.35-1,311.57

Finding the Fourth Proportional to 2,195.93, 3,030.35 and 1,311.57

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Solution

The fourth proportional to 2,195.93, 3,030.35 and 1,311.57 is: 1,809.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,195.93 : 3,030.35 = 1,311.57 : x
  2. Step 2: Convert to fraction form
    2,195.93/3,030.35 = 1,311.57/x
  3. Step 3: Cross multiply
    2,195.93x = 3,030.35 × 1,311.57
  4. Step 4: Simplify right side
    2,195.93x = 3,974,509.59
  5. Step 5: Solve for x
    x = 3,974,509.59/2,195.93
  6. Step 6: Final answer
    x = 1,809.95

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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.