Home / 2,815.76-3,886.78-1,696.74

Finding the Fourth Proportional to 2,815.76, 3,886.78 and 1,696.74

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Solution

The fourth proportional to 2,815.76, 3,886.78 and 1,696.74 is: 2,342.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,815.76 : 3,886.78 = 1,696.74 : x
  2. Step 2: Convert to fraction form
    2,815.76/3,886.78 = 1,696.74/x
  3. Step 3: Cross multiply
    2,815.76x = 3,886.78 × 1,696.74
  4. Step 4: Simplify right side
    2,815.76x = 6,594,855.10
  5. Step 5: Solve for x
    x = 6,594,855.10/2,815.76
  6. Step 6: Final answer
    x = 2,342.12

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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.