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Finding the Fourth Proportional to 9,279.88, 12,808.01 and 7,259.29

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Solution

The fourth proportional to 9,279.88, 12,808.01 and 7,259.29 is: 10,019.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,279.88 : 12,808.01 = 7,259.29 : x
  2. Step 2: Convert to fraction form
    9,279.88/12,808.01 = 7,259.29/x
  3. Step 3: Cross multiply
    9,279.88x = 12,808.01 × 7,259.29
  4. Step 4: Simplify right side
    9,279.88x = 92,977,058.91
  5. Step 5: Solve for x
    x = 92,977,058.91/9,279.88
  6. Step 6: Final answer
    x = 10,019.21

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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.