Home / 7,725.12-10,660.74-4,188.36

Finding the Fourth Proportional to 7,725.12, 10,660.74 and 4,188.36

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Solution

The fourth proportional to 7,725.12, 10,660.74 and 4,188.36 is: 5,779.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,725.12 : 10,660.74 = 4,188.36 : x
  2. Step 2: Convert to fraction form
    7,725.12/10,660.74 = 4,188.36/x
  3. Step 3: Cross multiply
    7,725.12x = 10,660.74 × 4,188.36
  4. Step 4: Simplify right side
    7,725.12x = 44,651,016.99
  5. Step 5: Solve for x
    x = 44,651,016.99/7,725.12
  6. Step 6: Final answer
    x = 5,779.98

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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.