Home / 3,859.65-5,320.86-2,740.18

Finding the Fourth Proportional to 3,859.65, 5,320.86 and 2,740.18

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Solution

The fourth proportional to 3,859.65, 5,320.86 and 2,740.18 is: 3,777.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,859.65 : 5,320.86 = 2,740.18 : x
  2. Step 2: Convert to fraction form
    3,859.65/5,320.86 = 2,740.18/x
  3. Step 3: Cross multiply
    3,859.65x = 5,320.86 × 2,740.18
  4. Step 4: Simplify right side
    3,859.65x = 14,580,100.85
  5. Step 5: Solve for x
    x = 14,580,100.85/3,859.65
  6. Step 6: Final answer
    x = 3,777.57

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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.