Home / 7,015.56-9,681.68-3,871.95

Finding the Fourth Proportional to 7,015.56, 9,681.68 and 3,871.95

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Solution

The fourth proportional to 7,015.56, 9,681.68 and 3,871.95 is: 5,343.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,015.56 : 9,681.68 = 3,871.95 : x
  2. Step 2: Convert to fraction form
    7,015.56/9,681.68 = 3,871.95/x
  3. Step 3: Cross multiply
    7,015.56x = 9,681.68 × 3,871.95
  4. Step 4: Simplify right side
    7,015.56x = 37,486,980.88
  5. Step 5: Solve for x
    x = 37,486,980.88/7,015.56
  6. Step 6: Final answer
    x = 5,343.41

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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.