Home / 8,783.10-13,176.90-5,078.70

Finding the Fourth Proportional to 8,783.10, 13,176.90 and 5,078.70

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Solution

The fourth proportional to 8,783.10, 13,176.90 and 5,078.70 is: 7,619.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,783.10 : 13,176.90 = 5,078.70 : x
  2. Step 2: Convert to fraction form
    8,783.10/13,176.90 = 5,078.70/x
  3. Step 3: Cross multiply
    8,783.10x = 13,176.90 × 5,078.70
  4. Step 4: Simplify right side
    8,783.10x = 66,921,522.03
  5. Step 5: Solve for x
    x = 66,921,522.03/8,783.10
  6. Step 6: Final answer
    x = 7,619.35

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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.