Home / 7,208.15-10,807.90-2,820.38

Finding the Fourth Proportional to 7,208.15, 10,807.90 and 2,820.38

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Solution

The fourth proportional to 7,208.15, 10,807.90 and 2,820.38 is: 4,228.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,208.15 : 10,807.90 = 2,820.38 : x
  2. Step 2: Convert to fraction form
    7,208.15/10,807.90 = 2,820.38/x
  3. Step 3: Cross multiply
    7,208.15x = 10,807.90 × 2,820.38
  4. Step 4: Simplify right side
    7,208.15x = 30,482,385.00
  5. Step 5: Solve for x
    x = 30,482,385.00/7,208.15
  6. Step 6: Final answer
    x = 4,228.88

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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.