Home / 7,136.12-10,703.01-1,942.40

Finding the Fourth Proportional to 7,136.12, 10,703.01 and 1,942.40

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Solution

The fourth proportional to 7,136.12, 10,703.01 and 1,942.40 is: 2,913.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,136.12 : 10,703.01 = 1,942.40 : x
  2. Step 2: Convert to fraction form
    7,136.12/10,703.01 = 1,942.40/x
  3. Step 3: Cross multiply
    7,136.12x = 10,703.01 × 1,942.40
  4. Step 4: Simplify right side
    7,136.12x = 20,789,526.62
  5. Step 5: Solve for x
    x = 20,789,526.62/7,136.12
  6. Step 6: Final answer
    x = 2,913.28

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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.