Home / 5,408.60-8,111.98-1,512.10

Finding the Fourth Proportional to 5,408.60, 8,111.98 and 1,512.10

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Solution

The fourth proportional to 5,408.60, 8,111.98 and 1,512.10 is: 2,267.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,408.60 : 8,111.98 = 1,512.10 : x
  2. Step 2: Convert to fraction form
    5,408.60/8,111.98 = 1,512.10/x
  3. Step 3: Cross multiply
    5,408.60x = 8,111.98 × 1,512.10
  4. Step 4: Simplify right side
    5,408.60x = 12,266,124.96
  5. Step 5: Solve for x
    x = 12,266,124.96/5,408.60
  6. Step 6: Final answer
    x = 2,267.89

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1.5x scale

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.