Home / 5,678.56-8,518.64-2,389.60

Finding the Fourth Proportional to 5,678.56, 8,518.64 and 2,389.60

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Solution

The fourth proportional to 5,678.56, 8,518.64 and 2,389.60 is: 3,584.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,678.56 : 8,518.64 = 2,389.60 : x
  2. Step 2: Convert to fraction form
    5,678.56/8,518.64 = 2,389.60/x
  3. Step 3: Cross multiply
    5,678.56x = 8,518.64 × 2,389.60
  4. Step 4: Simplify right side
    5,678.56x = 20,356,142.14
  5. Step 5: Solve for x
    x = 20,356,142.14/5,678.56
  6. Step 6: Final answer
    x = 3,584.74

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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.