Home / 7,776.57-10,731.78-4,790.71

Finding the Fourth Proportional to 7,776.57, 10,731.78 and 4,790.71

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Solution

The fourth proportional to 7,776.57, 10,731.78 and 4,790.71 is: 6,611.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,776.57 : 10,731.78 = 4,790.71 : x
  2. Step 2: Convert to fraction form
    7,776.57/10,731.78 = 4,790.71/x
  3. Step 3: Cross multiply
    7,776.57x = 10,731.78 × 4,790.71
  4. Step 4: Simplify right side
    7,776.57x = 51,412,818.93
  5. Step 5: Solve for x
    x = 51,412,818.93/7,776.57
  6. Step 6: Final answer
    x = 6,611.25

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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.