Home / 9,289.15-12,817.85-5,309.42

Finding the Fourth Proportional to 9,289.15, 12,817.85 and 5,309.42

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Solution

The fourth proportional to 9,289.15, 12,817.85 and 5,309.42 is: 7,326.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,289.15 : 12,817.85 = 5,309.42 : x
  2. Step 2: Convert to fraction form
    9,289.15/12,817.85 = 5,309.42/x
  3. Step 3: Cross multiply
    9,289.15x = 12,817.85 × 5,309.42
  4. Step 4: Simplify right side
    9,289.15x = 68,055,258.51
  5. Step 5: Solve for x
    x = 68,055,258.51/9,289.15
  6. Step 6: Final answer
    x = 7,326.32

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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.