Home / 7,188.31-10,778.13-2,800.63

Finding the Fourth Proportional to 7,188.31, 10,778.13 and 2,800.63

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Solution

The fourth proportional to 7,188.31, 10,778.13 and 2,800.63 is: 4,199.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,188.31 : 10,778.13 = 2,800.63 : x
  2. Step 2: Convert to fraction form
    7,188.31/10,778.13 = 2,800.63/x
  3. Step 3: Cross multiply
    7,188.31x = 10,778.13 × 2,800.63
  4. Step 4: Simplify right side
    7,188.31x = 30,185,554.22
  5. Step 5: Solve for x
    x = 30,185,554.22/7,188.31
  6. Step 6: Final answer
    x = 4,199.26

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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.