Home / 8,420.86-12,631.31-2,577.44

Finding the Fourth Proportional to 8,420.86, 12,631.31 and 2,577.44

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Solution

The fourth proportional to 8,420.86, 12,631.31 and 2,577.44 is: 3,866.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,420.86 : 12,631.31 = 2,577.44 : x
  2. Step 2: Convert to fraction form
    8,420.86/12,631.31 = 2,577.44/x
  3. Step 3: Cross multiply
    8,420.86x = 12,631.31 × 2,577.44
  4. Step 4: Simplify right side
    8,420.86x = 32,556,450.09
  5. Step 5: Solve for x
    x = 32,556,450.09/8,420.86
  6. Step 6: Final answer
    x = 3,866.17

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1.5x scale

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.