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Finding the Fourth Proportional to 6,374.40, 9,558.30 and 1,990.68

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Solution

The fourth proportional to 6,374.40, 9,558.30 and 1,990.68 is: 2,984.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,374.40 : 9,558.30 = 1,990.68 : x
  2. Step 2: Convert to fraction form
    6,374.40/9,558.30 = 1,990.68/x
  3. Step 3: Cross multiply
    6,374.40x = 9,558.30 × 1,990.68
  4. Step 4: Simplify right side
    6,374.40x = 19,027,516.64
  5. Step 5: Solve for x
    x = 19,027,516.64/6,374.40
  6. Step 6: Final answer
    x = 2,984.99

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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.