Home / 7,011.20-10,509.60-3,886.40

Finding the Fourth Proportional to 7,011.20, 10,509.60 and 3,886.40

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Solution

The fourth proportional to 7,011.20, 10,509.60 and 3,886.40 is: 5,825.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,011.20 : 10,509.60 = 3,886.40 : x
  2. Step 2: Convert to fraction form
    7,011.20/10,509.60 = 3,886.40/x
  3. Step 3: Cross multiply
    7,011.20x = 10,509.60 × 3,886.40
  4. Step 4: Simplify right side
    7,011.20x = 40,844,509.44
  5. Step 5: Solve for x
    x = 40,844,509.44/7,011.20
  6. Step 6: Final answer
    x = 5,825.61

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.