Home / 6,816.80-9,410.90-4,128.47

Finding the Fourth Proportional to 6,816.80, 9,410.90 and 4,128.47

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Solution

The fourth proportional to 6,816.80, 9,410.90 and 4,128.47 is: 5,699.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,816.80 : 9,410.90 = 4,128.47 : x
  2. Step 2: Convert to fraction form
    6,816.80/9,410.90 = 4,128.47/x
  3. Step 3: Cross multiply
    6,816.80x = 9,410.90 × 4,128.47
  4. Step 4: Simplify right side
    6,816.80x = 38,852,550.63
  5. Step 5: Solve for x
    x = 38,852,550.63/6,816.80
  6. Step 6: Final answer
    x = 5,699.53

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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.