Home / 2,621.49-3,617.78-1,442.63

Finding the Fourth Proportional to 2,621.49, 3,617.78 and 1,442.63

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Solution

The fourth proportional to 2,621.49, 3,617.78 and 1,442.63 is: 1,990.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,621.49 : 3,617.78 = 1,442.63 : x
  2. Step 2: Convert to fraction form
    2,621.49/3,617.78 = 1,442.63/x
  3. Step 3: Cross multiply
    2,621.49x = 3,617.78 × 1,442.63
  4. Step 4: Simplify right side
    2,621.49x = 5,219,117.96
  5. Step 5: Solve for x
    x = 5,219,117.96/2,621.49
  6. Step 6: Final answer
    x = 1,990.90

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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.