Home / 1,569.44-2,163.80-1,121.10

Finding the Fourth Proportional to 1,569.44, 2,163.80 and 1,121.10

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Solution

The fourth proportional to 1,569.44, 2,163.80 and 1,121.10 is: 1,545.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,569.44 : 2,163.80 = 1,121.10 : x
  2. Step 2: Convert to fraction form
    1,569.44/2,163.80 = 1,121.10/x
  3. Step 3: Cross multiply
    1,569.44x = 2,163.80 × 1,121.10
  4. Step 4: Simplify right side
    1,569.44x = 2,425,836.18
  5. Step 5: Solve for x
    x = 2,425,836.18/1,569.44
  6. Step 6: Final answer
    x = 1,545.67

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.