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Finding the Fourth Proportional to 2,999.62, 4,130.82 and 2,990.51

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Solution

The fourth proportional to 2,999.62, 4,130.82 and 2,990.51 is: 4,118.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,999.62 : 4,130.82 = 2,990.51 : x
  2. Step 2: Convert to fraction form
    2,999.62/4,130.82 = 2,990.51/x
  3. Step 3: Cross multiply
    2,999.62x = 4,130.82 × 2,990.51
  4. Step 4: Simplify right side
    2,999.62x = 12,353,258.52
  5. Step 5: Solve for x
    x = 12,353,258.52/2,999.62
  6. Step 6: Final answer
    x = 4,118.27

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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.