Home / 5,148.79-7,105.34-2,790.93

Finding the Fourth Proportional to 5,148.79, 7,105.34 and 2,790.93

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Solution

The fourth proportional to 5,148.79, 7,105.34 and 2,790.93 is: 3,851.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,148.79 : 7,105.34 = 2,790.93 : x
  2. Step 2: Convert to fraction form
    5,148.79/7,105.34 = 2,790.93/x
  3. Step 3: Cross multiply
    5,148.79x = 7,105.34 × 2,790.93
  4. Step 4: Simplify right side
    5,148.79x = 19,830,513.54
  5. Step 5: Solve for x
    x = 19,830,513.54/5,148.79
  6. Step 6: Final answer
    x = 3,851.49

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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.