Home / 9,115.75-12,579.74-4,924

Finding the Fourth Proportional to 9,115.75, 12,579.74 and 4,924

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Solution

The fourth proportional to 9,115.75, 12,579.74 and 4,924 is: 6,795.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,115.75 : 12,579.74 = 4,924 : x
  2. Step 2: Convert to fraction form
    9,115.75/12,579.74 = 4,924/x
  3. Step 3: Cross multiply
    9,115.75x = 12,579.74 × 4,924
  4. Step 4: Simplify right side
    9,115.75x = 61,942,639.76
  5. Step 5: Solve for x
    x = 61,942,639.76/9,115.75
  6. Step 6: Final answer
    x = 6,795.12

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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.