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Finding the Fourth Proportional to 5,638.68, 8,457.66 and 1,942.68

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Solution

The fourth proportional to 5,638.68, 8,457.66 and 1,942.68 is: 2,913.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,638.68 : 8,457.66 = 1,942.68 : x
  2. Step 2: Convert to fraction form
    5,638.68/8,457.66 = 1,942.68/x
  3. Step 3: Cross multiply
    5,638.68x = 8,457.66 × 1,942.68
  4. Step 4: Simplify right side
    5,638.68x = 16,430,526.93
  5. Step 5: Solve for x
    x = 16,430,526.93/5,638.68
  6. Step 6: Final answer
    x = 2,913.90

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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.