Home / 8,011.80-11,054.31-4,989.30

Finding the Fourth Proportional to 8,011.80, 11,054.31 and 4,989.30

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Solution

The fourth proportional to 8,011.80, 11,054.31 and 4,989.30 is: 6,884.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,011.80 : 11,054.31 = 4,989.30 : x
  2. Step 2: Convert to fraction form
    8,011.80/11,054.31 = 4,989.30/x
  3. Step 3: Cross multiply
    8,011.80x = 11,054.31 × 4,989.30
  4. Step 4: Simplify right side
    8,011.80x = 55,153,268.88
  5. Step 5: Solve for x
    x = 55,153,268.88/8,011.80
  6. Step 6: Final answer
    x = 6,884.00

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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.