Home / 7,712.80-11,570.10-4,941.70

Finding the Fourth Proportional to 7,712.80, 11,570.10 and 4,941.70

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Solution

The fourth proportional to 7,712.80, 11,570.10 and 4,941.70 is: 7,413.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,712.80 : 11,570.10 = 4,941.70 : x
  2. Step 2: Convert to fraction form
    7,712.80/11,570.10 = 4,941.70/x
  3. Step 3: Cross multiply
    7,712.80x = 11,570.10 × 4,941.70
  4. Step 4: Simplify right side
    7,712.80x = 57,175,963.17
  5. Step 5: Solve for x
    x = 57,175,963.17/7,712.80
  6. Step 6: Final answer
    x = 7,413.13

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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.