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Finding the Fourth Proportional to 8,480.40, 11,700.30 and 4,894.89

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Solution

The fourth proportional to 8,480.40, 11,700.30 and 4,894.89 is: 6,753.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,480.40 : 11,700.30 = 4,894.89 : x
  2. Step 2: Convert to fraction form
    8,480.40/11,700.30 = 4,894.89/x
  3. Step 3: Cross multiply
    8,480.40x = 11,700.30 × 4,894.89
  4. Step 4: Simplify right side
    8,480.40x = 57,271,710.68
  5. Step 5: Solve for x
    x = 57,271,710.68/8,480.40
  6. Step 6: Final answer
    x = 6,753.42

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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.