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Finding the Fourth Proportional to 1,408.83, 2,113.69 and 587.19

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Solution

The fourth proportional to 1,408.83, 2,113.69 and 587.19 is: 880.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,408.83 : 2,113.69 = 587.19 : x
  2. Step 2: Convert to fraction form
    1,408.83/2,113.69 = 587.19/x
  3. Step 3: Cross multiply
    1,408.83x = 2,113.69 × 587.19
  4. Step 4: Simplify right side
    1,408.83x = 1,241,125.59
  5. Step 5: Solve for x
    x = 1,241,125.59/1,408.83
  6. Step 6: Final answer
    x = 880.97

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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.