Home / 7,688.40-10,609.60-4,331.76

Finding the Fourth Proportional to 7,688.40, 10,609.60 and 4,331.76

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Solution

The fourth proportional to 7,688.40, 10,609.60 and 4,331.76 is: 5,977.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,688.40 : 10,609.60 = 4,331.76 : x
  2. Step 2: Convert to fraction form
    7,688.40/10,609.60 = 4,331.76/x
  3. Step 3: Cross multiply
    7,688.40x = 10,609.60 × 4,331.76
  4. Step 4: Simplify right side
    7,688.40x = 45,958,240.90
  5. Step 5: Solve for x
    x = 45,958,240.90/7,688.40
  6. Step 6: Final answer
    x = 5,977.61

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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.