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Finding the Fourth Proportional to 4,676.77, 7,015.54 and 1,389.87

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Solution

The fourth proportional to 4,676.77, 7,015.54 and 1,389.87 is: 2,084.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,676.77 : 7,015.54 = 1,389.87 : x
  2. Step 2: Convert to fraction form
    4,676.77/7,015.54 = 1,389.87/x
  3. Step 3: Cross multiply
    4,676.77x = 7,015.54 × 1,389.87
  4. Step 4: Simplify right side
    4,676.77x = 9,750,664.07
  5. Step 5: Solve for x
    x = 9,750,664.07/4,676.77
  6. Step 6: Final answer
    x = 2,084.91

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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.