Home / 2,918.78-4,028.65-1,739.63

Finding the Fourth Proportional to 2,918.78, 4,028.65 and 1,739.63

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Solution

The fourth proportional to 2,918.78, 4,028.65 and 1,739.63 is: 2,401.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,918.78 : 4,028.65 = 1,739.63 : x
  2. Step 2: Convert to fraction form
    2,918.78/4,028.65 = 1,739.63/x
  3. Step 3: Cross multiply
    2,918.78x = 4,028.65 × 1,739.63
  4. Step 4: Simplify right side
    2,918.78x = 7,008,360.40
  5. Step 5: Solve for x
    x = 7,008,360.40/2,918.78
  6. Step 6: Final answer
    x = 2,401.13

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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.