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Finding the Fourth Proportional to 9,213, 12,713.94 and 5,021.25

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Solution

The fourth proportional to 9,213, 12,713.94 and 5,021.25 is: 6,929.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,213 : 12,713.94 = 5,021.25 : x
  2. Step 2: Convert to fraction form
    9,213/12,713.94 = 5,021.25/x
  3. Step 3: Cross multiply
    9,213x = 12,713.94 × 5,021.25
  4. Step 4: Simplify right side
    9,213x = 63,839,871.23
  5. Step 5: Solve for x
    x = 63,839,871.23/9,213
  6. Step 6: Final answer
    x = 6,929.33

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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.