Home / 2,930.95-4,395.70-1,081.06

Finding the Fourth Proportional to 2,930.95, 4,395.70 and 1,081.06

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Solution

The fourth proportional to 2,930.95, 4,395.70 and 1,081.06 is: 1,621.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,930.95 : 4,395.70 = 1,081.06 : x
  2. Step 2: Convert to fraction form
    2,930.95/4,395.70 = 1,081.06/x
  3. Step 3: Cross multiply
    2,930.95x = 4,395.70 × 1,081.06
  4. Step 4: Simplify right side
    2,930.95x = 4,752,015.44
  5. Step 5: Solve for x
    x = 4,752,015.44/2,930.95
  6. Step 6: Final answer
    x = 1,621.32

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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.