Home / 2,448.78-3,379.48-1,386.55

Finding the Fourth Proportional to 2,448.78, 3,379.48 and 1,386.55

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Solution

The fourth proportional to 2,448.78, 3,379.48 and 1,386.55 is: 1,913.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,448.78 : 3,379.48 = 1,386.55 : x
  2. Step 2: Convert to fraction form
    2,448.78/3,379.48 = 1,386.55/x
  3. Step 3: Cross multiply
    2,448.78x = 3,379.48 × 1,386.55
  4. Step 4: Simplify right side
    2,448.78x = 4,685,817.99
  5. Step 5: Solve for x
    x = 4,685,817.99/2,448.78
  6. Step 6: Final answer
    x = 1,913.53

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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.