Home / 8,631.74-12,948.16-2,788.58

Finding the Fourth Proportional to 8,631.74, 12,948.16 and 2,788.58

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Solution

The fourth proportional to 8,631.74, 12,948.16 and 2,788.58 is: 4,183.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,631.74 : 12,948.16 = 2,788.58 : x
  2. Step 2: Convert to fraction form
    8,631.74/12,948.16 = 2,788.58/x
  3. Step 3: Cross multiply
    8,631.74x = 12,948.16 × 2,788.58
  4. Step 4: Simplify right side
    8,631.74x = 36,106,980.01
  5. Step 5: Solve for x
    x = 36,106,980.01/8,631.74
  6. Step 6: Final answer
    x = 4,183.05

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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.