Home / 2,868.84-3,959.69-1,927.28

Finding the Fourth Proportional to 2,868.84, 3,959.69 and 1,927.28

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Solution

The fourth proportional to 2,868.84, 3,959.69 and 1,927.28 is: 2,660.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,868.84 : 3,959.69 = 1,927.28 : x
  2. Step 2: Convert to fraction form
    2,868.84/3,959.69 = 1,927.28/x
  3. Step 3: Cross multiply
    2,868.84x = 3,959.69 × 1,927.28
  4. Step 4: Simplify right side
    2,868.84x = 7,631,431.34
  5. Step 5: Solve for x
    x = 7,631,431.34/2,868.84
  6. Step 6: Final answer
    x = 2,660.11

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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.