Home / 5,383.08-7,428.57-3,145.28

Finding the Fourth Proportional to 5,383.08, 7,428.57 and 3,145.28

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Solution

The fourth proportional to 5,383.08, 7,428.57 and 3,145.28 is: 4,340.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,383.08 : 7,428.57 = 3,145.28 : x
  2. Step 2: Convert to fraction form
    5,383.08/7,428.57 = 3,145.28/x
  3. Step 3: Cross multiply
    5,383.08x = 7,428.57 × 3,145.28
  4. Step 4: Simplify right side
    5,383.08x = 23,364,895.51
  5. Step 5: Solve for x
    x = 23,364,895.51/5,383.08
  6. Step 6: Final answer
    x = 4,340.43

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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.