Home / 9,218.79-12,718.89-5,238.45

Finding the Fourth Proportional to 9,218.79, 12,718.89 and 5,238.45

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Solution

The fourth proportional to 9,218.79, 12,718.89 and 5,238.45 is: 7,227.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,218.79 : 12,718.89 = 5,238.45 : x
  2. Step 2: Convert to fraction form
    9,218.79/12,718.89 = 5,238.45/x
  3. Step 3: Cross multiply
    9,218.79x = 12,718.89 × 5,238.45
  4. Step 4: Simplify right side
    9,218.79x = 66,627,269.32
  5. Step 5: Solve for x
    x = 66,627,269.32/9,218.79
  6. Step 6: Final answer
    x = 7,227.33

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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.