Home / 7,420.93-11,131.40-2,980.63

Finding the Fourth Proportional to 7,420.93, 11,131.40 and 2,980.63

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Solution

The fourth proportional to 7,420.93, 11,131.40 and 2,980.63 is: 4,470.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,420.93 : 11,131.40 = 2,980.63 : x
  2. Step 2: Convert to fraction form
    7,420.93/11,131.40 = 2,980.63/x
  3. Step 3: Cross multiply
    7,420.93x = 11,131.40 × 2,980.63
  4. Step 4: Simplify right side
    7,420.93x = 33,178,584.78
  5. Step 5: Solve for x
    x = 33,178,584.78/7,420.93
  6. Step 6: Final answer
    x = 4,470.95

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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.