Home / 4,842.18-6,686.90-4,172.75

Finding the Fourth Proportional to 4,842.18, 6,686.90 and 4,172.75

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Solution

The fourth proportional to 4,842.18, 6,686.90 and 4,172.75 is: 5,762.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,842.18 : 6,686.90 = 4,172.75 : x
  2. Step 2: Convert to fraction form
    4,842.18/6,686.90 = 4,172.75/x
  3. Step 3: Cross multiply
    4,842.18x = 6,686.90 × 4,172.75
  4. Step 4: Simplify right side
    4,842.18x = 27,902,707.68
  5. Step 5: Solve for x
    x = 27,902,707.68/4,842.18
  6. Step 6: Final answer
    x = 5,762.43

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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.