Home / 5,148.77-7,105.22-2,790.86

Finding the Fourth Proportional to 5,148.77, 7,105.22 and 2,790.86

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Solution

The fourth proportional to 5,148.77, 7,105.22 and 2,790.86 is: 3,851.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,148.77 : 7,105.22 = 2,790.86 : x
  2. Step 2: Convert to fraction form
    5,148.77/7,105.22 = 2,790.86/x
  3. Step 3: Cross multiply
    5,148.77x = 7,105.22 × 2,790.86
  4. Step 4: Simplify right side
    5,148.77x = 19,829,635.27
  5. Step 5: Solve for x
    x = 19,829,635.27/5,148.77
  6. Step 6: Final answer
    x = 3,851.34

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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.