Home / 1,913.64-2,641.23-1,127.85

Finding the Fourth Proportional to 1,913.64, 2,641.23 and 1,127.85

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Solution

The fourth proportional to 1,913.64, 2,641.23 and 1,127.85 is: 1,556.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,913.64 : 2,641.23 = 1,127.85 : x
  2. Step 2: Convert to fraction form
    1,913.64/2,641.23 = 1,127.85/x
  3. Step 3: Cross multiply
    1,913.64x = 2,641.23 × 1,127.85
  4. Step 4: Simplify right side
    1,913.64x = 2,978,911.26
  5. Step 5: Solve for x
    x = 2,978,911.26/1,913.64
  6. Step 6: Final answer
    x = 1,556.67

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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.