Home / 9,137.40-12,576.87-7,628.28

Finding the Fourth Proportional to 9,137.40, 12,576.87 and 7,628.28

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Solution

The fourth proportional to 9,137.40, 12,576.87 and 7,628.28 is: 10,499.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,137.40 : 12,576.87 = 7,628.28 : x
  2. Step 2: Convert to fraction form
    9,137.40/12,576.87 = 7,628.28/x
  3. Step 3: Cross multiply
    9,137.40x = 12,576.87 × 7,628.28
  4. Step 4: Simplify right side
    9,137.40x = 95,939,885.88
  5. Step 5: Solve for x
    x = 95,939,885.88/9,137.40
  6. Step 6: Final answer
    x = 10,499.69

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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.