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Finding the Fourth Proportional to 2,113.02, 3,168.99 and 1,188.99

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Solution

The fourth proportional to 2,113.02, 3,168.99 and 1,188.99 is: 1,783.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,113.02 : 3,168.99 = 1,188.99 : x
  2. Step 2: Convert to fraction form
    2,113.02/3,168.99 = 1,188.99/x
  3. Step 3: Cross multiply
    2,113.02x = 3,168.99 × 1,188.99
  4. Step 4: Simplify right side
    2,113.02x = 3,767,897.42
  5. Step 5: Solve for x
    x = 3,767,897.42/2,113.02
  6. Step 6: Final answer
    x = 1,783.18

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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.