Home / 7,725.53-10,661.30-4,188.75

Finding the Fourth Proportional to 7,725.53, 10,661.30 and 4,188.75

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Solution

The fourth proportional to 7,725.53, 10,661.30 and 4,188.75 is: 5,780.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,725.53 : 10,661.30 = 4,188.75 : x
  2. Step 2: Convert to fraction form
    7,725.53/10,661.30 = 4,188.75/x
  3. Step 3: Cross multiply
    7,725.53x = 10,661.30 × 4,188.75
  4. Step 4: Simplify right side
    7,725.53x = 44,657,446.12
  5. Step 5: Solve for x
    x = 44,657,446.12/7,725.53
  6. Step 6: Final answer
    x = 5,780.51

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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.