Home / 7,901.78-11,852.63-3,221.77

Finding the Fourth Proportional to 7,901.78, 11,852.63 and 3,221.77

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Solution

The fourth proportional to 7,901.78, 11,852.63 and 3,221.77 is: 4,832.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,901.78 : 11,852.63 = 3,221.77 : x
  2. Step 2: Convert to fraction form
    7,901.78/11,852.63 = 3,221.77/x
  3. Step 3: Cross multiply
    7,901.78x = 11,852.63 × 3,221.77
  4. Step 4: Simplify right side
    7,901.78x = 38,186,465.49
  5. Step 5: Solve for x
    x = 38,186,465.49/7,901.78
  6. Step 6: Final answer
    x = 4,832.64

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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.