Home / 8,520.90-11,759.58-4,745.40

Finding the Fourth Proportional to 8,520.90, 11,759.58 and 4,745.40

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Solution

The fourth proportional to 8,520.90, 11,759.58 and 4,745.40 is: 6,549.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,520.90 : 11,759.58 = 4,745.40 : x
  2. Step 2: Convert to fraction form
    8,520.90/11,759.58 = 4,745.40/x
  3. Step 3: Cross multiply
    8,520.90x = 11,759.58 × 4,745.40
  4. Step 4: Simplify right side
    8,520.90x = 55,803,910.93
  5. Step 5: Solve for x
    x = 55,803,910.93/8,520.90
  6. Step 6: Final answer
    x = 6,549.06

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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.