Home / 2,617.20-3,609.02-1,821.42

Finding the Fourth Proportional to 2,617.20, 3,609.02 and 1,821.42

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Solution

The fourth proportional to 2,617.20, 3,609.02 and 1,821.42 is: 2,511.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,617.20 : 3,609.02 = 1,821.42 : x
  2. Step 2: Convert to fraction form
    2,617.20/3,609.02 = 1,821.42/x
  3. Step 3: Cross multiply
    2,617.20x = 3,609.02 × 1,821.42
  4. Step 4: Simplify right side
    2,617.20x = 6,573,541.21
  5. Step 5: Solve for x
    x = 6,573,541.21/2,617.20
  6. Step 6: Final answer
    x = 2,511.67

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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.