Home / 1,408.35-2,111.11-530.72

Finding the Fourth Proportional to 1,408.35, 2,111.11 and 530.72

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Solution

The fourth proportional to 1,408.35, 2,111.11 and 530.72 is: 795.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,408.35 : 2,111.11 = 530.72 : x
  2. Step 2: Convert to fraction form
    1,408.35/2,111.11 = 530.72/x
  3. Step 3: Cross multiply
    1,408.35x = 2,111.11 × 530.72
  4. Step 4: Simplify right side
    1,408.35x = 1,120,396.42
  5. Step 5: Solve for x
    x = 1,120,396.42/1,408.35
  6. Step 6: Final answer
    x = 795.54

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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.