Home / 7,725.34-10,660.98-4,188.55

Finding the Fourth Proportional to 7,725.34, 10,660.98 and 4,188.55

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Solution

The fourth proportional to 7,725.34, 10,660.98 and 4,188.55 is: 5,780.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,725.34 : 10,660.98 = 4,188.55 : x
  2. Step 2: Convert to fraction form
    7,725.34/10,660.98 = 4,188.55/x
  3. Step 3: Cross multiply
    7,725.34x = 10,660.98 × 4,188.55
  4. Step 4: Simplify right side
    7,725.34x = 44,654,047.78
  5. Step 5: Solve for x
    x = 44,654,047.78/7,725.34
  6. Step 6: Final answer
    x = 5,780.20

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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.