Home / 5,616.45-8,421.69-1,719.81

Finding the Fourth Proportional to 5,616.45, 8,421.69 and 1,719.81

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Solution

The fourth proportional to 5,616.45, 8,421.69 and 1,719.81 is: 2,578.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,616.45 : 8,421.69 = 1,719.81 : x
  2. Step 2: Convert to fraction form
    5,616.45/8,421.69 = 1,719.81/x
  3. Step 3: Cross multiply
    5,616.45x = 8,421.69 × 1,719.81
  4. Step 4: Simplify right side
    5,616.45x = 14,483,706.68
  5. Step 5: Solve for x
    x = 14,483,706.68/5,616.45
  6. Step 6: Final answer
    x = 2,578.80

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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.