Home / 7,821.67-11,724.22-3,658.18

Finding the Fourth Proportional to 7,821.67, 11,724.22 and 3,658.18

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Solution

The fourth proportional to 7,821.67, 11,724.22 and 3,658.18 is: 5,483.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,821.67 : 11,724.22 = 3,658.18 : x
  2. Step 2: Convert to fraction form
    7,821.67/11,724.22 = 3,658.18/x
  3. Step 3: Cross multiply
    7,821.67x = 11,724.22 × 3,658.18
  4. Step 4: Simplify right side
    7,821.67x = 42,889,307.12
  5. Step 5: Solve for x
    x = 42,889,307.12/7,821.67
  6. Step 6: Final answer
    x = 5,483.40

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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.