Home / 7,911.40-11,852.70-4,829.80

Finding the Fourth Proportional to 7,911.40, 11,852.70 and 4,829.80

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Solution

The fourth proportional to 7,911.40, 11,852.70 and 4,829.80 is: 7,235.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,911.40 : 11,852.70 = 4,829.80 : x
  2. Step 2: Convert to fraction form
    7,911.40/11,852.70 = 4,829.80/x
  3. Step 3: Cross multiply
    7,911.40x = 11,852.70 × 4,829.80
  4. Step 4: Simplify right side
    7,911.40x = 57,246,170.46
  5. Step 5: Solve for x
    x = 57,246,170.46/7,911.40
  6. Step 6: Final answer
    x = 7,235.91

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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.