Home / 2,918.84-4,026.24-1,923.78

Finding the Fourth Proportional to 2,918.84, 4,026.24 and 1,923.78

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Solution

The fourth proportional to 2,918.84, 4,026.24 and 1,923.78 is: 2,653.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,918.84 : 4,026.24 = 1,923.78 : x
  2. Step 2: Convert to fraction form
    2,918.84/4,026.24 = 1,923.78/x
  3. Step 3: Cross multiply
    2,918.84x = 4,026.24 × 1,923.78
  4. Step 4: Simplify right side
    2,918.84x = 7,745,599.99
  5. Step 5: Solve for x
    x = 7,745,599.99/2,918.84
  6. Step 6: Final answer
    x = 2,653.66

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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.