Home / 7,222.50-9,966.51-4,078.62

Finding the Fourth Proportional to 7,222.50, 9,966.51 and 4,078.62

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Solution

The fourth proportional to 7,222.50, 9,966.51 and 4,078.62 is: 5,628.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,222.50 : 9,966.51 = 4,078.62 : x
  2. Step 2: Convert to fraction form
    7,222.50/9,966.51 = 4,078.62/x
  3. Step 3: Cross multiply
    7,222.50x = 9,966.51 × 4,078.62
  4. Step 4: Simplify right side
    7,222.50x = 40,649,607.02
  5. Step 5: Solve for x
    x = 40,649,607.02/7,222.50
  6. Step 6: Final answer
    x = 5,628.19

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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.