Home / 9,139.80-13,706.10-3,293.40

Finding the Fourth Proportional to 9,139.80, 13,706.10 and 3,293.40

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Solution

The fourth proportional to 9,139.80, 13,706.10 and 3,293.40 is: 4,938.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,139.80 : 13,706.10 = 3,293.40 : x
  2. Step 2: Convert to fraction form
    9,139.80/13,706.10 = 3,293.40/x
  3. Step 3: Cross multiply
    9,139.80x = 13,706.10 × 3,293.40
  4. Step 4: Simplify right side
    9,139.80x = 45,139,669.74
  5. Step 5: Solve for x
    x = 45,139,669.74/9,139.80
  6. Step 6: Final answer
    x = 4,938.80

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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.