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Finding the Fourth Proportional to 4,686.80, 6,990.64 and 4,548.48

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Solution

The fourth proportional to 4,686.80, 6,990.64 and 4,548.48 is: 6,784.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,686.80 : 6,990.64 = 4,548.48 : x
  2. Step 2: Convert to fraction form
    4,686.80/6,990.64 = 4,548.48/x
  3. Step 3: Cross multiply
    4,686.80x = 6,990.64 × 4,548.48
  4. Step 4: Simplify right side
    4,686.80x = 31,796,786.23
  5. Step 5: Solve for x
    x = 31,796,786.23/4,686.80
  6. Step 6: Final answer
    x = 6,784.33

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.