Home / 7,688.76-11,533.56-2,142.10

Finding the Fourth Proportional to 7,688.76, 11,533.56 and 2,142.10

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Solution

The fourth proportional to 7,688.76, 11,533.56 and 2,142.10 is: 3,213.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,688.76 : 11,533.56 = 2,142.10 : x
  2. Step 2: Convert to fraction form
    7,688.76/11,533.56 = 2,142.10/x
  3. Step 3: Cross multiply
    7,688.76x = 11,533.56 × 2,142.10
  4. Step 4: Simplify right side
    7,688.76x = 24,706,038.88
  5. Step 5: Solve for x
    x = 24,706,038.88/7,688.76
  6. Step 6: Final answer
    x = 3,213.27

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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.