Home / 8,681.45-13,018.28-2,756.66

Finding the Fourth Proportional to 8,681.45, 13,018.28 and 2,756.66

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Solution

The fourth proportional to 8,681.45, 13,018.28 and 2,756.66 is: 4,133.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,681.45 : 13,018.28 = 2,756.66 : x
  2. Step 2: Convert to fraction form
    8,681.45/13,018.28 = 2,756.66/x
  3. Step 3: Cross multiply
    8,681.45x = 13,018.28 × 2,756.66
  4. Step 4: Simplify right side
    8,681.45x = 35,886,957.96
  5. Step 5: Solve for x
    x = 35,886,957.96/8,681.45
  6. Step 6: Final answer
    x = 4,133.75

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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.