Home / 3,886.32-5,829.40-1,289.28

Finding the Fourth Proportional to 3,886.32, 5,829.40 and 1,289.28

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Solution

The fourth proportional to 3,886.32, 5,829.40 and 1,289.28 is: 1,933.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,886.32 : 5,829.40 = 1,289.28 : x
  2. Step 2: Convert to fraction form
    3,886.32/5,829.40 = 1,289.28/x
  3. Step 3: Cross multiply
    3,886.32x = 5,829.40 × 1,289.28
  4. Step 4: Simplify right side
    3,886.32x = 7,515,728.83
  5. Step 5: Solve for x
    x = 7,515,728.83/3,886.32
  6. Step 6: Final answer
    x = 1,933.89

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.