Home / 7,875.83-11,815.81-2,945.57

Finding the Fourth Proportional to 7,875.83, 11,815.81 and 2,945.57

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Solution

The fourth proportional to 7,875.83, 11,815.81 and 2,945.57 is: 4,419.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,875.83 : 11,815.81 = 2,945.57 : x
  2. Step 2: Convert to fraction form
    7,875.83/11,815.81 = 2,945.57/x
  3. Step 3: Cross multiply
    7,875.83x = 11,815.81 × 2,945.57
  4. Step 4: Simplify right side
    7,875.83x = 34,804,229.02
  5. Step 5: Solve for x
    x = 34,804,229.02/7,875.83
  6. Step 6: Final answer
    x = 4,419.12

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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.