Home / 2,913.12-4,021.74-2,018.16

Finding the Fourth Proportional to 2,913.12, 4,021.74 and 2,018.16

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Solution

The fourth proportional to 2,913.12, 4,021.74 and 2,018.16 is: 2,786.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,913.12 : 4,021.74 = 2,018.16 : x
  2. Step 2: Convert to fraction form
    2,913.12/4,021.74 = 2,018.16/x
  3. Step 3: Cross multiply
    2,913.12x = 4,021.74 × 2,018.16
  4. Step 4: Simplify right side
    2,913.12x = 8,116,514.80
  5. Step 5: Solve for x
    x = 8,116,514.80/2,913.12
  6. Step 6: Final answer
    x = 2,786.19

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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.