Home / 3,913.36-5,870.40-1,316.56

Finding the Fourth Proportional to 3,913.36, 5,870.40 and 1,316.56

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Solution

The fourth proportional to 3,913.36, 5,870.40 and 1,316.56 is: 1,974.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,913.36 : 5,870.40 = 1,316.56 : x
  2. Step 2: Convert to fraction form
    3,913.36/5,870.40 = 1,316.56/x
  3. Step 3: Cross multiply
    3,913.36x = 5,870.40 × 1,316.56
  4. Step 4: Simplify right side
    3,913.36x = 7,728,733.82
  5. Step 5: Solve for x
    x = 7,728,733.82/3,913.36
  6. Step 6: Final answer
    x = 1,974.96

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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.