Home / 5,719.02-7,890.36-3,360.72

Finding the Fourth Proportional to 5,719.02, 7,890.36 and 3,360.72

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Solution

The fourth proportional to 5,719.02, 7,890.36 and 3,360.72 is: 4,636.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,719.02 : 7,890.36 = 3,360.72 : x
  2. Step 2: Convert to fraction form
    5,719.02/7,890.36 = 3,360.72/x
  3. Step 3: Cross multiply
    5,719.02x = 7,890.36 × 3,360.72
  4. Step 4: Simplify right side
    5,719.02x = 26,517,290.66
  5. Step 5: Solve for x
    x = 26,517,290.66/5,719.02
  6. Step 6: Final answer
    x = 4,636.68

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.