Home / 7,128.28-10,684.45-2,965.46

Finding the Fourth Proportional to 7,128.28, 10,684.45 and 2,965.46

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Solution

The fourth proportional to 7,128.28, 10,684.45 and 2,965.46 is: 4,444.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,128.28 : 10,684.45 = 2,965.46 : x
  2. Step 2: Convert to fraction form
    7,128.28/10,684.45 = 2,965.46/x
  3. Step 3: Cross multiply
    7,128.28x = 10,684.45 × 2,965.46
  4. Step 4: Simplify right side
    7,128.28x = 31,684,248.26
  5. Step 5: Solve for x
    x = 31,684,248.26/7,128.28
  6. Step 6: Final answer
    x = 4,444.87

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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.