Home / 5,157.51-7,731.57-1,868.28

Finding the Fourth Proportional to 5,157.51, 7,731.57 and 1,868.28

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Solution

The fourth proportional to 5,157.51, 7,731.57 and 1,868.28 is: 2,800.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,157.51 : 7,731.57 = 1,868.28 : x
  2. Step 2: Convert to fraction form
    5,157.51/7,731.57 = 1,868.28/x
  3. Step 3: Cross multiply
    5,157.51x = 7,731.57 × 1,868.28
  4. Step 4: Simplify right side
    5,157.51x = 14,444,737.60
  5. Step 5: Solve for x
    x = 14,444,737.60/5,157.51
  6. Step 6: Final answer
    x = 2,800.72

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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.