Home / 1,385.24-2,074.45-1,074.51

Finding the Fourth Proportional to 1,385.24, 2,074.45 and 1,074.51

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Solution

The fourth proportional to 1,385.24, 2,074.45 and 1,074.51 is: 1,609.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,385.24 : 2,074.45 = 1,074.51 : x
  2. Step 2: Convert to fraction form
    1,385.24/2,074.45 = 1,074.51/x
  3. Step 3: Cross multiply
    1,385.24x = 2,074.45 × 1,074.51
  4. Step 4: Simplify right side
    1,385.24x = 2,229,014.58
  5. Step 5: Solve for x
    x = 2,229,014.58/1,385.24
  6. Step 6: Final answer
    x = 1,609.12

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.