Home / 7,977.40-11,988.06-4,282.36

Finding the Fourth Proportional to 7,977.40, 11,988.06 and 4,282.36

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Solution

The fourth proportional to 7,977.40, 11,988.06 and 4,282.36 is: 6,435.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,977.40 : 11,988.06 = 4,282.36 : x
  2. Step 2: Convert to fraction form
    7,977.40/11,988.06 = 4,282.36/x
  3. Step 3: Cross multiply
    7,977.40x = 11,988.06 × 4,282.36
  4. Step 4: Simplify right side
    7,977.40x = 51,337,188.62
  5. Step 5: Solve for x
    x = 51,337,188.62/7,977.40
  6. Step 6: Final answer
    x = 6,435.33

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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.