Home / 7,117.23-10,674.60-1,921.89

Finding the Fourth Proportional to 7,117.23, 10,674.60 and 1,921.89

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Solution

The fourth proportional to 7,117.23, 10,674.60 and 1,921.89 is: 2,882.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,117.23 : 10,674.60 = 1,921.89 : x
  2. Step 2: Convert to fraction form
    7,117.23/10,674.60 = 1,921.89/x
  3. Step 3: Cross multiply
    7,117.23x = 10,674.60 × 1,921.89
  4. Step 4: Simplify right side
    7,117.23x = 20,515,406.99
  5. Step 5: Solve for x
    x = 20,515,406.99/7,117.23
  6. Step 6: Final answer
    x = 2,882.50

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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.