Home / 2,621.35-3,617.31-1,442.35

Finding the Fourth Proportional to 2,621.35, 3,617.31 and 1,442.35

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Solution

The fourth proportional to 2,621.35, 3,617.31 and 1,442.35 is: 1,990.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,621.35 : 3,617.31 = 1,442.35 : x
  2. Step 2: Convert to fraction form
    2,621.35/3,617.31 = 1,442.35/x
  3. Step 3: Cross multiply
    2,621.35x = 3,617.31 × 1,442.35
  4. Step 4: Simplify right side
    2,621.35x = 5,217,427.08
  5. Step 5: Solve for x
    x = 5,217,427.08/2,621.35
  6. Step 6: Final answer
    x = 1,990.36

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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.