Home / 2,631.20-3,631.56-1,555.26

Finding the Fourth Proportional to 2,631.20, 3,631.56 and 1,555.26

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Solution

The fourth proportional to 2,631.20, 3,631.56 and 1,555.26 is: 2,146.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,631.20 : 3,631.56 = 1,555.26 : x
  2. Step 2: Convert to fraction form
    2,631.20/3,631.56 = 1,555.26/x
  3. Step 3: Cross multiply
    2,631.20x = 3,631.56 × 1,555.26
  4. Step 4: Simplify right side
    2,631.20x = 5,648,020.01
  5. Step 5: Solve for x
    x = 5,648,020.01/2,631.20
  6. Step 6: Final answer
    x = 2,146.56

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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.