Home / 2,461.21-3,396.31-1,398.85

Finding the Fourth Proportional to 2,461.21, 3,396.31 and 1,398.85

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Solution

The fourth proportional to 2,461.21, 3,396.31 and 1,398.85 is: 1,930.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,461.21 : 3,396.31 = 1,398.85 : x
  2. Step 2: Convert to fraction form
    2,461.21/3,396.31 = 1,398.85/x
  3. Step 3: Cross multiply
    2,461.21x = 3,396.31 × 1,398.85
  4. Step 4: Simplify right side
    2,461.21x = 4,750,928.24
  5. Step 5: Solve for x
    x = 4,750,928.24/2,461.21
  6. Step 6: Final answer
    x = 1,930.32

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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.