Home / 7,815.39-10,786.49-4,459.30

Finding the Fourth Proportional to 7,815.39, 10,786.49 and 4,459.30

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Solution

The fourth proportional to 7,815.39, 10,786.49 and 4,459.30 is: 6,154.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,815.39 : 10,786.49 = 4,459.30 : x
  2. Step 2: Convert to fraction form
    7,815.39/10,786.49 = 4,459.30/x
  3. Step 3: Cross multiply
    7,815.39x = 10,786.49 × 4,459.30
  4. Step 4: Simplify right side
    7,815.39x = 48,100,140.92
  5. Step 5: Solve for x
    x = 48,100,140.92/7,815.39
  6. Step 6: Final answer
    x = 6,154.54

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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.