Home / 8,385.48-12,577.74-3,120.48

Finding the Fourth Proportional to 8,385.48, 12,577.74 and 3,120.48

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Solution

The fourth proportional to 8,385.48, 12,577.74 and 3,120.48 is: 4,680.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,385.48 : 12,577.74 = 3,120.48 : x
  2. Step 2: Convert to fraction form
    8,385.48/12,577.74 = 3,120.48/x
  3. Step 3: Cross multiply
    8,385.48x = 12,577.74 × 3,120.48
  4. Step 4: Simplify right side
    8,385.48x = 39,248,586.12
  5. Step 5: Solve for x
    x = 39,248,586.12/8,385.48
  6. Step 6: Final answer
    x = 4,680.54

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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.