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Finding the Fourth Proportional to 7,620.03, 10,516.86 and 4,476.21

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Solution

The fourth proportional to 7,620.03, 10,516.86 and 4,476.21 is: 6,177.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,620.03 : 10,516.86 = 4,476.21 : x
  2. Step 2: Convert to fraction form
    7,620.03/10,516.86 = 4,476.21/x
  3. Step 3: Cross multiply
    7,620.03x = 10,516.86 × 4,476.21
  4. Step 4: Simplify right side
    7,620.03x = 47,075,673.90
  5. Step 5: Solve for x
    x = 47,075,673.90/7,620.03
  6. Step 6: Final answer
    x = 6,177.89

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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.