Home / 7,720.34-11,580.51-1,876.90

Finding the Fourth Proportional to 7,720.34, 11,580.51 and 1,876.90

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Solution

The fourth proportional to 7,720.34, 11,580.51 and 1,876.90 is: 2,815.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,720.34 : 11,580.51 = 1,876.90 : x
  2. Step 2: Convert to fraction form
    7,720.34/11,580.51 = 1,876.90/x
  3. Step 3: Cross multiply
    7,720.34x = 11,580.51 × 1,876.90
  4. Step 4: Simplify right side
    7,720.34x = 21,735,413.25
  5. Step 5: Solve for x
    x = 21,735,413.25/7,720.34
  6. Step 6: Final answer
    x = 2,815.34

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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.