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Finding the Fourth Proportional to 8,907, 12,291.69 and 5,370.36

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Solution

The fourth proportional to 8,907, 12,291.69 and 5,370.36 is: 7,411.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,907 : 12,291.69 = 5,370.36 : x
  2. Step 2: Convert to fraction form
    8,907/12,291.69 = 5,370.36/x
  3. Step 3: Cross multiply
    8,907x = 12,291.69 × 5,370.36
  4. Step 4: Simplify right side
    8,907x = 66,010,800.31
  5. Step 5: Solve for x
    x = 66,010,800.31/8,907
  6. Step 6: Final answer
    x = 7,411.11

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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.