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Finding the Fourth Proportional to 6,999.76, 10,498.20 and 3,300.40

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Solution

The fourth proportional to 6,999.76, 10,498.20 and 3,300.40 is: 4,949.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,999.76 : 10,498.20 = 3,300.40 : x
  2. Step 2: Convert to fraction form
    6,999.76/10,498.20 = 3,300.40/x
  3. Step 3: Cross multiply
    6,999.76x = 10,498.20 × 3,300.40
  4. Step 4: Simplify right side
    6,999.76x = 34,648,259.28
  5. Step 5: Solve for x
    x = 34,648,259.28/6,999.76
  6. Step 6: Final answer
    x = 4,949.92

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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.