Home / 7,880.32-11,821.02-2,685.52

Finding the Fourth Proportional to 7,880.32, 11,821.02 and 2,685.52

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Solution

The fourth proportional to 7,880.32, 11,821.02 and 2,685.52 is: 4,028.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,880.32 : 11,821.02 = 2,685.52 : x
  2. Step 2: Convert to fraction form
    7,880.32/11,821.02 = 2,685.52/x
  3. Step 3: Cross multiply
    7,880.32x = 11,821.02 × 2,685.52
  4. Step 4: Simplify right side
    7,880.32x = 31,745,585.63
  5. Step 5: Solve for x
    x = 31,745,585.63/7,880.32
  6. Step 6: Final answer
    x = 4,028.46

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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.