Home / 3,929.86-5,427.93-3,412.36

Finding the Fourth Proportional to 3,929.86, 5,427.93 and 3,412.36

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Solution

The fourth proportional to 3,929.86, 5,427.93 and 3,412.36 is: 4,713.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,929.86 : 5,427.93 = 3,412.36 : x
  2. Step 2: Convert to fraction form
    3,929.86/5,427.93 = 3,412.36/x
  3. Step 3: Cross multiply
    3,929.86x = 5,427.93 × 3,412.36
  4. Step 4: Simplify right side
    3,929.86x = 18,522,051.21
  5. Step 5: Solve for x
    x = 18,522,051.21/3,929.86
  6. Step 6: Final answer
    x = 4,713.16

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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.