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Finding the Fourth Proportional to 7,720.68, 10,654.98 and 4,362.24

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Solution

The fourth proportional to 7,720.68, 10,654.98 and 4,362.24 is: 6,020.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,720.68 : 10,654.98 = 4,362.24 : x
  2. Step 2: Convert to fraction form
    7,720.68/10,654.98 = 4,362.24/x
  3. Step 3: Cross multiply
    7,720.68x = 10,654.98 × 4,362.24
  4. Step 4: Simplify right side
    7,720.68x = 46,479,579.96
  5. Step 5: Solve for x
    x = 46,479,579.96/7,720.68
  6. Step 6: Final answer
    x = 6,020.14

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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.