Home / 2,271.94-3,135.84-1,388.49

Finding the Fourth Proportional to 2,271.94, 3,135.84 and 1,388.49

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Solution

The fourth proportional to 2,271.94, 3,135.84 and 1,388.49 is: 1,916.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,271.94 : 3,135.84 = 1,388.49 : x
  2. Step 2: Convert to fraction form
    2,271.94/3,135.84 = 1,388.49/x
  3. Step 3: Cross multiply
    2,271.94x = 3,135.84 × 1,388.49
  4. Step 4: Simplify right side
    2,271.94x = 4,354,065.52
  5. Step 5: Solve for x
    x = 4,354,065.52/2,271.94
  6. Step 6: Final answer
    x = 1,916.45

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1.5x scale

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.