Home / 3,857.51-5,317.79-2,528.91

Finding the Fourth Proportional to 3,857.51, 5,317.79 and 2,528.91

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Solution

The fourth proportional to 3,857.51, 5,317.79 and 2,528.91 is: 3,486.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,857.51 : 5,317.79 = 2,528.91 : x
  2. Step 2: Convert to fraction form
    3,857.51/5,317.79 = 2,528.91/x
  3. Step 3: Cross multiply
    3,857.51x = 5,317.79 × 2,528.91
  4. Step 4: Simplify right side
    3,857.51x = 13,448,199.66
  5. Step 5: Solve for x
    x = 13,448,199.66/3,857.51
  6. Step 6: Final answer
    x = 3,486.24

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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.