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Finding the Fourth Proportional to 7,220.63, 9,966.66 and 4,568.89

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Solution

The fourth proportional to 7,220.63, 9,966.66 and 4,568.89 is: 6,306.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,220.63 : 9,966.66 = 4,568.89 : x
  2. Step 2: Convert to fraction form
    7,220.63/9,966.66 = 4,568.89/x
  3. Step 3: Cross multiply
    7,220.63x = 9,966.66 × 4,568.89
  4. Step 4: Simplify right side
    7,220.63x = 45,536,573.21
  5. Step 5: Solve for x
    x = 45,536,573.21/7,220.63
  6. Step 6: Final answer
    x = 6,306.45

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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.