Home / 1,408.11-2,113.52-1,041.78

Finding the Fourth Proportional to 1,408.11, 2,113.52 and 1,041.78

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Solution

The fourth proportional to 1,408.11, 2,113.52 and 1,041.78 is: 1,563.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,408.11 : 2,113.52 = 1,041.78 : x
  2. Step 2: Convert to fraction form
    1,408.11/2,113.52 = 1,041.78/x
  3. Step 3: Cross multiply
    1,408.11x = 2,113.52 × 1,041.78
  4. Step 4: Simplify right side
    1,408.11x = 2,201,817.66
  5. Step 5: Solve for x
    x = 2,201,817.66/1,408.11
  6. Step 6: Final answer
    x = 1,563.67

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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.