Home / 1,742.14-2,613.55-509.57

Finding the Fourth Proportional to 1,742.14, 2,613.55 and 509.57

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Solution

The fourth proportional to 1,742.14, 2,613.55 and 509.57 is: 764.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,742.14 : 2,613.55 = 509.57 : x
  2. Step 2: Convert to fraction form
    1,742.14/2,613.55 = 509.57/x
  3. Step 3: Cross multiply
    1,742.14x = 2,613.55 × 509.57
  4. Step 4: Simplify right side
    1,742.14x = 1,331,786.67
  5. Step 5: Solve for x
    x = 1,331,786.67/1,742.14
  6. Step 6: Final answer
    x = 764.45

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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.