Home / 8,418.35-12,631.16-4,518.20

Finding the Fourth Proportional to 8,418.35, 12,631.16 and 4,518.20

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Solution

The fourth proportional to 8,418.35, 12,631.16 and 4,518.20 is: 6,779.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,418.35 : 12,631.16 = 4,518.20 : x
  2. Step 2: Convert to fraction form
    8,418.35/12,631.16 = 4,518.20/x
  3. Step 3: Cross multiply
    8,418.35x = 12,631.16 × 4,518.20
  4. Step 4: Simplify right side
    8,418.35x = 57,070,055.25
  5. Step 5: Solve for x
    x = 57,070,055.25/8,418.35
  6. Step 6: Final answer
    x = 6,779.25

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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.