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Finding the Fourth Proportional to 7,719, 10,652.48 and 4,361.92

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Solution

The fourth proportional to 7,719, 10,652.48 and 4,361.92 is: 6,019.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,719 : 10,652.48 = 4,361.92 : x
  2. Step 2: Convert to fraction form
    7,719/10,652.48 = 4,361.92/x
  3. Step 3: Cross multiply
    7,719x = 10,652.48 × 4,361.92
  4. Step 4: Simplify right side
    7,719x = 46,465,265.56
  5. Step 5: Solve for x
    x = 46,465,265.56/7,719
  6. Step 6: Final answer
    x = 6,019.60

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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.