Home / 8,980.09-12,400.36-5,628.66

Finding the Fourth Proportional to 8,980.09, 12,400.36 and 5,628.66

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Solution

The fourth proportional to 8,980.09, 12,400.36 and 5,628.66 is: 7,772.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,980.09 : 12,400.36 = 5,628.66 : x
  2. Step 2: Convert to fraction form
    8,980.09/12,400.36 = 5,628.66/x
  3. Step 3: Cross multiply
    8,980.09x = 12,400.36 × 5,628.66
  4. Step 4: Simplify right side
    8,980.09x = 69,797,410.32
  5. Step 5: Solve for x
    x = 69,797,410.32/8,980.09
  6. Step 6: Final answer
    x = 7,772.46

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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.