Home / 9,319.86-13,981.88-4,940.39

Finding the Fourth Proportional to 9,319.86, 13,981.88 and 4,940.39

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Solution

The fourth proportional to 9,319.86, 13,981.88 and 4,940.39 is: 7,411.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,319.86 : 13,981.88 = 4,940.39 : x
  2. Step 2: Convert to fraction form
    9,319.86/13,981.88 = 4,940.39/x
  3. Step 3: Cross multiply
    9,319.86x = 13,981.88 × 4,940.39
  4. Step 4: Simplify right side
    9,319.86x = 69,075,987.44
  5. Step 5: Solve for x
    x = 69,075,987.44/9,319.86
  6. Step 6: Final answer
    x = 7,411.70

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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.