Home / 8,421.23-12,631.88-2,577.82

Finding the Fourth Proportional to 8,421.23, 12,631.88 and 2,577.82

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Solution

The fourth proportional to 8,421.23, 12,631.88 and 2,577.82 is: 3,866.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,421.23 : 12,631.88 = 2,577.82 : x
  2. Step 2: Convert to fraction form
    8,421.23/12,631.88 = 2,577.82/x
  3. Step 3: Cross multiply
    8,421.23x = 12,631.88 × 2,577.82
  4. Step 4: Simplify right side
    8,421.23x = 32,562,712.90
  5. Step 5: Solve for x
    x = 32,562,712.90/8,421.23
  6. Step 6: Final answer
    x = 3,866.74

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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.