Home / 1,749.24-2,408.94-1,438.20

Finding the Fourth Proportional to 1,749.24, 2,408.94 and 1,438.20

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Solution

The fourth proportional to 1,749.24, 2,408.94 and 1,438.20 is: 1,980.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,749.24 : 2,408.94 = 1,438.20 : x
  2. Step 2: Convert to fraction form
    1,749.24/2,408.94 = 1,438.20/x
  3. Step 3: Cross multiply
    1,749.24x = 2,408.94 × 1,438.20
  4. Step 4: Simplify right side
    1,749.24x = 3,464,537.51
  5. Step 5: Solve for x
    x = 3,464,537.51/1,749.24
  6. Step 6: Final answer
    x = 1,980.60

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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.