Home / 2,913.07-4,019.91-1,586.78

Finding the Fourth Proportional to 2,913.07, 4,019.91 and 1,586.78

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Solution

The fourth proportional to 2,913.07, 4,019.91 and 1,586.78 is: 2,189.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,913.07 : 4,019.91 = 1,586.78 : x
  2. Step 2: Convert to fraction form
    2,913.07/4,019.91 = 1,586.78/x
  3. Step 3: Cross multiply
    2,913.07x = 4,019.91 × 1,586.78
  4. Step 4: Simplify right side
    2,913.07x = 6,378,722.84
  5. Step 5: Solve for x
    x = 6,378,722.84/2,913.07
  6. Step 6: Final answer
    x = 2,189.69

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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.