Home / 1,143.04-1,715.64-1,072.30

Finding the Fourth Proportional to 1,143.04, 1,715.64 and 1,072.30

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Solution

The fourth proportional to 1,143.04, 1,715.64 and 1,072.30 is: 1,609.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,143.04 : 1,715.64 = 1,072.30 : x
  2. Step 2: Convert to fraction form
    1,143.04/1,715.64 = 1,072.30/x
  3. Step 3: Cross multiply
    1,143.04x = 1,715.64 × 1,072.30
  4. Step 4: Simplify right side
    1,143.04x = 1,839,680.77
  5. Step 5: Solve for x
    x = 1,839,680.77/1,143.04
  6. Step 6: Final answer
    x = 1,609.46

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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.