Home / 3,909.08-5,389.50-2,511.32

Finding the Fourth Proportional to 3,909.08, 5,389.50 and 2,511.32

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Solution

The fourth proportional to 3,909.08, 5,389.50 and 2,511.32 is: 3,462.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,909.08 : 5,389.50 = 2,511.32 : x
  2. Step 2: Convert to fraction form
    3,909.08/5,389.50 = 2,511.32/x
  3. Step 3: Cross multiply
    3,909.08x = 5,389.50 × 2,511.32
  4. Step 4: Simplify right side
    3,909.08x = 13,534,759.14
  5. Step 5: Solve for x
    x = 13,534,759.14/3,909.08
  6. Step 6: Final answer
    x = 3,462.39

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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.