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Finding the Fourth Proportional to 5,111.64, 7,667.46 and 1,648.89

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Solution

The fourth proportional to 5,111.64, 7,667.46 and 1,648.89 is: 2,473.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,111.64 : 7,667.46 = 1,648.89 : x
  2. Step 2: Convert to fraction form
    5,111.64/7,667.46 = 1,648.89/x
  3. Step 3: Cross multiply
    5,111.64x = 7,667.46 × 1,648.89
  4. Step 4: Simplify right side
    5,111.64x = 12,642,817.29
  5. Step 5: Solve for x
    x = 12,642,817.29/5,111.64
  6. Step 6: Final answer
    x = 2,473.34

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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.