Home / 5,487.40-8,231.95-1,788.77

Finding the Fourth Proportional to 5,487.40, 8,231.95 and 1,788.77

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Solution

The fourth proportional to 5,487.40, 8,231.95 and 1,788.77 is: 2,683.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,487.40 : 8,231.95 = 1,788.77 : x
  2. Step 2: Convert to fraction form
    5,487.40/8,231.95 = 1,788.77/x
  3. Step 3: Cross multiply
    5,487.40x = 8,231.95 × 1,788.77
  4. Step 4: Simplify right side
    5,487.40x = 14,725,040.15
  5. Step 5: Solve for x
    x = 14,725,040.15/5,487.40
  6. Step 6: Final answer
    x = 2,683.43

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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.