Home / 7,019.40-10,531.84-3,121.14

Finding the Fourth Proportional to 7,019.40, 10,531.84 and 3,121.14

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Solution

The fourth proportional to 7,019.40, 10,531.84 and 3,121.14 is: 4,682.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,019.40 : 10,531.84 = 3,121.14 : x
  2. Step 2: Convert to fraction form
    7,019.40/10,531.84 = 3,121.14/x
  3. Step 3: Cross multiply
    7,019.40x = 10,531.84 × 3,121.14
  4. Step 4: Simplify right side
    7,019.40x = 32,871,347.10
  5. Step 5: Solve for x
    x = 32,871,347.10/7,019.40
  6. Step 6: Final answer
    x = 4,682.93

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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.