Home / 3,900.55-5,382.74-2,307.77

Finding the Fourth Proportional to 3,900.55, 5,382.74 and 2,307.77

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Solution

The fourth proportional to 3,900.55, 5,382.74 and 2,307.77 is: 3,184.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,900.55 : 5,382.74 = 2,307.77 : x
  2. Step 2: Convert to fraction form
    3,900.55/5,382.74 = 2,307.77/x
  3. Step 3: Cross multiply
    3,900.55x = 5,382.74 × 2,307.77
  4. Step 4: Simplify right side
    3,900.55x = 12,422,125.89
  5. Step 5: Solve for x
    x = 12,422,125.89/3,900.55
  6. Step 6: Final answer
    x = 3,184.71

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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.