Home / 8,945-12,345.56-5,218.28

Finding the Fourth Proportional to 8,945, 12,345.56 and 5,218.28

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Solution

The fourth proportional to 8,945, 12,345.56 and 5,218.28 is: 7,202.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,945 : 12,345.56 = 5,218.28 : x
  2. Step 2: Convert to fraction form
    8,945/12,345.56 = 5,218.28/x
  3. Step 3: Cross multiply
    8,945x = 12,345.56 × 5,218.28
  4. Step 4: Simplify right side
    8,945x = 64,422,588.84
  5. Step 5: Solve for x
    x = 64,422,588.84/8,945
  6. Step 6: Final answer
    x = 7,202.08

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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.