Home / 1,927.45-2,890.45-1,277.29

Finding the Fourth Proportional to 1,927.45, 2,890.45 and 1,277.29

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Solution

The fourth proportional to 1,927.45, 2,890.45 and 1,277.29 is: 1,915.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,927.45 : 2,890.45 = 1,277.29 : x
  2. Step 2: Convert to fraction form
    1,927.45/2,890.45 = 1,277.29/x
  3. Step 3: Cross multiply
    1,927.45x = 2,890.45 × 1,277.29
  4. Step 4: Simplify right side
    1,927.45x = 3,691,942.88
  5. Step 5: Solve for x
    x = 3,691,942.88/1,927.45
  6. Step 6: Final answer
    x = 1,915.45

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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.