Home / 7,823.02-11,742.40-6,939.31

Finding the Fourth Proportional to 7,823.02, 11,742.40 and 6,939.31

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Solution

The fourth proportional to 7,823.02, 11,742.40 and 6,939.31 is: 10,415.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,823.02 : 11,742.40 = 6,939.31 : x
  2. Step 2: Convert to fraction form
    7,823.02/11,742.40 = 6,939.31/x
  3. Step 3: Cross multiply
    7,823.02x = 11,742.40 × 6,939.31
  4. Step 4: Simplify right side
    7,823.02x = 81,484,153.74
  5. Step 5: Solve for x
    x = 81,484,153.74/7,823.02
  6. Step 6: Final answer
    x = 10,415.95

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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.