Home / 2,621.73-3,617.85-1,442.57

Finding the Fourth Proportional to 2,621.73, 3,617.85 and 1,442.57

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Solution

The fourth proportional to 2,621.73, 3,617.85 and 1,442.57 is: 1,990.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,621.73 : 3,617.85 = 1,442.57 : x
  2. Step 2: Convert to fraction form
    2,621.73/3,617.85 = 1,442.57/x
  3. Step 3: Cross multiply
    2,621.73x = 3,617.85 × 1,442.57
  4. Step 4: Simplify right side
    2,621.73x = 5,219,010.92
  5. Step 5: Solve for x
    x = 5,219,010.92/2,621.73
  6. Step 6: Final answer
    x = 1,990.67

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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.