Home / 3,128.49-4,693.75-1,048.68

Finding the Fourth Proportional to 3,128.49, 4,693.75 and 1,048.68

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Solution

The fourth proportional to 3,128.49, 4,693.75 and 1,048.68 is: 1,573.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,128.49 : 4,693.75 = 1,048.68 : x
  2. Step 2: Convert to fraction form
    3,128.49/4,693.75 = 1,048.68/x
  3. Step 3: Cross multiply
    3,128.49x = 4,693.75 × 1,048.68
  4. Step 4: Simplify right side
    3,128.49x = 4,922,239.13
  5. Step 5: Solve for x
    x = 4,922,239.13/3,128.49
  6. Step 6: Final answer
    x = 1,573.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.