Home / 9,286.15-12,815.81-5,307.84

Finding the Fourth Proportional to 9,286.15, 12,815.81 and 5,307.84

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Solution

The fourth proportional to 9,286.15, 12,815.81 and 5,307.84 is: 7,325.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,286.15 : 12,815.81 = 5,307.84 : x
  2. Step 2: Convert to fraction form
    9,286.15/12,815.81 = 5,307.84/x
  3. Step 3: Cross multiply
    9,286.15x = 12,815.81 × 5,307.84
  4. Step 4: Simplify right side
    9,286.15x = 68,024,268.95
  5. Step 5: Solve for x
    x = 68,024,268.95/9,286.15
  6. Step 6: Final answer
    x = 7,325.35

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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.