Home / 9,278.75-12,804.68-5,087

Finding the Fourth Proportional to 9,278.75, 12,804.68 and 5,087

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Solution

The fourth proportional to 9,278.75, 12,804.68 and 5,087 is: 7,020.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,278.75 : 12,804.68 = 5,087 : x
  2. Step 2: Convert to fraction form
    9,278.75/12,804.68 = 5,087/x
  3. Step 3: Cross multiply
    9,278.75x = 12,804.68 × 5,087
  4. Step 4: Simplify right side
    9,278.75x = 65,137,381.73
  5. Step 5: Solve for x
    x = 65,137,381.73/9,278.75
  6. Step 6: Final answer
    x = 7,020.06

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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.