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Finding the Fourth Proportional to 6,990.20, 10,485.30 and 2,373.20

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Solution

The fourth proportional to 6,990.20, 10,485.30 and 2,373.20 is: 3,559.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,990.20 : 10,485.30 = 2,373.20 : x
  2. Step 2: Convert to fraction form
    6,990.20/10,485.30 = 2,373.20/x
  3. Step 3: Cross multiply
    6,990.20x = 10,485.30 × 2,373.20
  4. Step 4: Simplify right side
    6,990.20x = 24,883,713.96
  5. Step 5: Solve for x
    x = 24,883,713.96/6,990.20
  6. Step 6: Final answer
    x = 3,559.80

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Double scale
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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.