Home / 7,688.75-11,533.14-2,142.11

Finding the Fourth Proportional to 7,688.75, 11,533.14 and 2,142.11

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Solution

The fourth proportional to 7,688.75, 11,533.14 and 2,142.11 is: 3,213.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,688.75 : 11,533.14 = 2,142.11 : x
  2. Step 2: Convert to fraction form
    7,688.75/11,533.14 = 2,142.11/x
  3. Step 3: Cross multiply
    7,688.75x = 11,533.14 × 2,142.11
  4. Step 4: Simplify right side
    7,688.75x = 24,705,283.36
  5. Step 5: Solve for x
    x = 24,705,283.36/7,688.75
  6. Step 6: Final answer
    x = 3,213.18

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.