Home / 8,321.72-11,480.40-4,784.18

Finding the Fourth Proportional to 8,321.72, 11,480.40 and 4,784.18

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Solution

The fourth proportional to 8,321.72, 11,480.40 and 4,784.18 is: 6,600.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,321.72 : 11,480.40 = 4,784.18 : x
  2. Step 2: Convert to fraction form
    8,321.72/11,480.40 = 4,784.18/x
  3. Step 3: Cross multiply
    8,321.72x = 11,480.40 × 4,784.18
  4. Step 4: Simplify right side
    8,321.72x = 54,924,242.67
  5. Step 5: Solve for x
    x = 54,924,242.67/8,321.72
  6. Step 6: Final answer
    x = 6,600.11

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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.