Home / 2,290.42-3,160.76-1,295.70

Finding the Fourth Proportional to 2,290.42, 3,160.76 and 1,295.70

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Solution

The fourth proportional to 2,290.42, 3,160.76 and 1,295.70 is: 1,788.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,290.42 : 3,160.76 = 1,295.70 : x
  2. Step 2: Convert to fraction form
    2,290.42/3,160.76 = 1,295.70/x
  3. Step 3: Cross multiply
    2,290.42x = 3,160.76 × 1,295.70
  4. Step 4: Simplify right side
    2,290.42x = 4,095,396.73
  5. Step 5: Solve for x
    x = 4,095,396.73/2,290.42
  6. Step 6: Final answer
    x = 1,788.05

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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.