Home / 8,623.60-12,930.72-3,690.16

Finding the Fourth Proportional to 8,623.60, 12,930.72 and 3,690.16

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Solution

The fourth proportional to 8,623.60, 12,930.72 and 3,690.16 is: 5,533.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,623.60 : 12,930.72 = 3,690.16 : x
  2. Step 2: Convert to fraction form
    8,623.60/12,930.72 = 3,690.16/x
  3. Step 3: Cross multiply
    8,623.60x = 12,930.72 × 3,690.16
  4. Step 4: Simplify right side
    8,623.60x = 47,716,425.72
  5. Step 5: Solve for x
    x = 47,716,425.72/8,623.60
  6. Step 6: Final answer
    x = 5,533.24

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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.