Home / 9,218.04-12,720.94-5,239.15

Finding the Fourth Proportional to 9,218.04, 12,720.94 and 5,239.15

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Solution

The fourth proportional to 9,218.04, 12,720.94 and 5,239.15 is: 7,230.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,218.04 : 12,720.94 = 5,239.15 : x
  2. Step 2: Convert to fraction form
    9,218.04/12,720.94 = 5,239.15/x
  3. Step 3: Cross multiply
    9,218.04x = 12,720.94 × 5,239.15
  4. Step 4: Simplify right side
    9,218.04x = 66,646,867.90
  5. Step 5: Solve for x
    x = 66,646,867.90/9,218.04
  6. Step 6: Final answer
    x = 7,230.05

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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.