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Finding the Fourth Proportional to 5,792.81, 7,990 and 3,555.77

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Solution

The fourth proportional to 5,792.81, 7,990 and 3,555.77 is: 4,904.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,792.81 : 7,990 = 3,555.77 : x
  2. Step 2: Convert to fraction form
    5,792.81/7,990 = 3,555.77/x
  3. Step 3: Cross multiply
    5,792.81x = 7,990 × 3,555.77
  4. Step 4: Simplify right side
    5,792.81x = 28,410,602.30
  5. Step 5: Solve for x
    x = 28,410,602.30/5,792.81
  6. Step 6: Final answer
    x = 4,904.46

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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.