Home / 5,679.17-7,832.81-3,690.36

Finding the Fourth Proportional to 5,679.17, 7,832.81 and 3,690.36

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Solution

The fourth proportional to 5,679.17, 7,832.81 and 3,690.36 is: 5,089.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,679.17 : 7,832.81 = 3,690.36 : x
  2. Step 2: Convert to fraction form
    5,679.17/7,832.81 = 3,690.36/x
  3. Step 3: Cross multiply
    5,679.17x = 7,832.81 × 3,690.36
  4. Step 4: Simplify right side
    5,679.17x = 28,905,927.31
  5. Step 5: Solve for x
    x = 28,905,927.31/5,679.17
  6. Step 6: Final answer
    x = 5,089.82

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1.5x scale

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.