Home / 7,725.09-10,660.64-4,188.32

Finding the Fourth Proportional to 7,725.09, 10,660.64 and 4,188.32

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Solution

The fourth proportional to 7,725.09, 10,660.64 and 4,188.32 is: 5,779.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,725.09 : 10,660.64 = 4,188.32 : x
  2. Step 2: Convert to fraction form
    7,725.09/10,660.64 = 4,188.32/x
  3. Step 3: Cross multiply
    7,725.09x = 10,660.64 × 4,188.32
  4. Step 4: Simplify right side
    7,725.09x = 44,650,128.89
  5. Step 5: Solve for x
    x = 44,650,128.89/7,725.09
  6. Step 6: Final answer
    x = 5,779.88

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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.