Home / 8,991.04-12,409.26-5,636.77

Finding the Fourth Proportional to 8,991.04, 12,409.26 and 5,636.77

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Solution

The fourth proportional to 8,991.04, 12,409.26 and 5,636.77 is: 7,779.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,991.04 : 12,409.26 = 5,636.77 : x
  2. Step 2: Convert to fraction form
    8,991.04/12,409.26 = 5,636.77/x
  3. Step 3: Cross multiply
    8,991.04x = 12,409.26 × 5,636.77
  4. Step 4: Simplify right side
    8,991.04x = 69,948,054.26
  5. Step 5: Solve for x
    x = 69,948,054.26/8,991.04
  6. Step 6: Final answer
    x = 7,779.75

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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.