Home / 2,913.98-4,020.14-1,919.74

Finding the Fourth Proportional to 2,913.98, 4,020.14 and 1,919.74

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Solution

The fourth proportional to 2,913.98, 4,020.14 and 1,919.74 is: 2,648.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,913.98 : 4,020.14 = 1,919.74 : x
  2. Step 2: Convert to fraction form
    2,913.98/4,020.14 = 1,919.74/x
  3. Step 3: Cross multiply
    2,913.98x = 4,020.14 × 1,919.74
  4. Step 4: Simplify right side
    2,913.98x = 7,717,623.56
  5. Step 5: Solve for x
    x = 7,717,623.56/2,913.98
  6. Step 6: Final answer
    x = 2,648.48

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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.