Home / 8,628.29-11,907.80-5,090.81

Finding the Fourth Proportional to 8,628.29, 11,907.80 and 5,090.81

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Solution

The fourth proportional to 8,628.29, 11,907.80 and 5,090.81 is: 7,025.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,628.29 : 11,907.80 = 5,090.81 : x
  2. Step 2: Convert to fraction form
    8,628.29/11,907.80 = 5,090.81/x
  3. Step 3: Cross multiply
    8,628.29x = 11,907.80 × 5,090.81
  4. Step 4: Simplify right side
    8,628.29x = 60,620,347.32
  5. Step 5: Solve for x
    x = 60,620,347.32/8,628.29
  6. Step 6: Final answer
    x = 7,025.77

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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.