Home / 7,725.58-10,661.24-4,188.76

Finding the Fourth Proportional to 7,725.58, 10,661.24 and 4,188.76

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Solution

The fourth proportional to 7,725.58, 10,661.24 and 4,188.76 is: 5,780.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,725.58 : 10,661.24 = 4,188.76 : x
  2. Step 2: Convert to fraction form
    7,725.58/10,661.24 = 4,188.76/x
  3. Step 3: Cross multiply
    7,725.58x = 10,661.24 × 4,188.76
  4. Step 4: Simplify right side
    7,725.58x = 44,657,354.72
  5. Step 5: Solve for x
    x = 44,657,354.72/7,725.58
  6. Step 6: Final answer
    x = 5,780.46

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Half scale
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Double scale
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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.