Home / 8,713.12-13,070.64-2,790.55

Finding the Fourth Proportional to 8,713.12, 13,070.64 and 2,790.55

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Solution

The fourth proportional to 8,713.12, 13,070.64 and 2,790.55 is: 4,186.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,713.12 : 13,070.64 = 2,790.55 : x
  2. Step 2: Convert to fraction form
    8,713.12/13,070.64 = 2,790.55/x
  3. Step 3: Cross multiply
    8,713.12x = 13,070.64 × 2,790.55
  4. Step 4: Simplify right side
    8,713.12x = 36,474,274.45
  5. Step 5: Solve for x
    x = 36,474,274.45/8,713.12
  6. Step 6: Final answer
    x = 4,186.13

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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.