Home / 5,485.78-8,228.67-1,788.01

Finding the Fourth Proportional to 5,485.78, 8,228.67 and 1,788.01

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Solution

The fourth proportional to 5,485.78, 8,228.67 and 1,788.01 is: 2,682.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,485.78 : 8,228.67 = 1,788.01 : x
  2. Step 2: Convert to fraction form
    5,485.78/8,228.67 = 1,788.01/x
  3. Step 3: Cross multiply
    5,485.78x = 8,228.67 × 1,788.01
  4. Step 4: Simplify right side
    5,485.78x = 14,712,916.97
  5. Step 5: Solve for x
    x = 14,712,916.97/5,485.78
  6. Step 6: Final answer
    x = 2,682.01

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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.