Home / 3,708.63-5,118.48-2,115.28

Finding the Fourth Proportional to 3,708.63, 5,118.48 and 2,115.28

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Solution

The fourth proportional to 3,708.63, 5,118.48 and 2,115.28 is: 2,919.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,708.63 : 5,118.48 = 2,115.28 : x
  2. Step 2: Convert to fraction form
    3,708.63/5,118.48 = 2,115.28/x
  3. Step 3: Cross multiply
    3,708.63x = 5,118.48 × 2,115.28
  4. Step 4: Simplify right side
    3,708.63x = 10,827,018.37
  5. Step 5: Solve for x
    x = 10,827,018.37/3,708.63
  6. Step 6: Final answer
    x = 2,919.41

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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.