Home / 8,315.43-11,477.61-4,779.78

Finding the Fourth Proportional to 8,315.43, 11,477.61 and 4,779.78

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Solution

The fourth proportional to 8,315.43, 11,477.61 and 4,779.78 is: 6,597.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,315.43 : 11,477.61 = 4,779.78 : x
  2. Step 2: Convert to fraction form
    8,315.43/11,477.61 = 4,779.78/x
  3. Step 3: Cross multiply
    8,315.43x = 11,477.61 × 4,779.78
  4. Step 4: Simplify right side
    8,315.43x = 54,860,450.73
  5. Step 5: Solve for x
    x = 54,860,450.73/8,315.43
  6. Step 6: Final answer
    x = 6,597.43

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.