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Finding the Fourth Proportional to 2,991.51, 4,484.79 and 1,430.73

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Solution

The fourth proportional to 2,991.51, 4,484.79 and 1,430.73 is: 2,144.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,991.51 : 4,484.79 = 1,430.73 : x
  2. Step 2: Convert to fraction form
    2,991.51/4,484.79 = 1,430.73/x
  3. Step 3: Cross multiply
    2,991.51x = 4,484.79 × 1,430.73
  4. Step 4: Simplify right side
    2,991.51x = 6,416,523.60
  5. Step 5: Solve for x
    x = 6,416,523.60/2,991.51
  6. Step 6: Final answer
    x = 2,144.91

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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.