Home / 9,228.30-12,736.80-5,780.48

Finding the Fourth Proportional to 9,228.30, 12,736.80 and 5,780.48

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Solution

The fourth proportional to 9,228.30, 12,736.80 and 5,780.48 is: 7,978.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,228.30 : 12,736.80 = 5,780.48 : x
  2. Step 2: Convert to fraction form
    9,228.30/12,736.80 = 5,780.48/x
  3. Step 3: Cross multiply
    9,228.30x = 12,736.80 × 5,780.48
  4. Step 4: Simplify right side
    9,228.30x = 73,624,849.51
  5. Step 5: Solve for x
    x = 73,624,849.51/9,228.30
  6. Step 6: Final answer
    x = 7,978.16

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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.