Home / 7,869.16-11,800.86-3,970.84

Finding the Fourth Proportional to 7,869.16, 11,800.86 and 3,970.84

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Solution

The fourth proportional to 7,869.16, 11,800.86 and 3,970.84 is: 5,954.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,869.16 : 11,800.86 = 3,970.84 : x
  2. Step 2: Convert to fraction form
    7,869.16/11,800.86 = 3,970.84/x
  3. Step 3: Cross multiply
    7,869.16x = 11,800.86 × 3,970.84
  4. Step 4: Simplify right side
    7,869.16x = 46,859,326.92
  5. Step 5: Solve for x
    x = 46,859,326.92/7,869.16
  6. Step 6: Final answer
    x = 5,954.81

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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.