Home / 2,631.10-3,619.74-2,558.20

Finding the Fourth Proportional to 2,631.10, 3,619.74 and 2,558.20

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Solution

The fourth proportional to 2,631.10, 3,619.74 and 2,558.20 is: 3,519.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,631.10 : 3,619.74 = 2,558.20 : x
  2. Step 2: Convert to fraction form
    2,631.10/3,619.74 = 2,558.20/x
  3. Step 3: Cross multiply
    2,631.10x = 3,619.74 × 2,558.20
  4. Step 4: Simplify right side
    2,631.10x = 9,260,018.87
  5. Step 5: Solve for x
    x = 9,260,018.87/2,631.10
  6. Step 6: Final answer
    x = 3,519.45

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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.