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Finding the Fourth Proportional to 7,013.04, 9,678.06 and 3,869.34

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Solution

The fourth proportional to 7,013.04, 9,678.06 and 3,869.34 is: 5,339.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,013.04 : 9,678.06 = 3,869.34 : x
  2. Step 2: Convert to fraction form
    7,013.04/9,678.06 = 3,869.34/x
  3. Step 3: Cross multiply
    7,013.04x = 9,678.06 × 3,869.34
  4. Step 4: Simplify right side
    7,013.04x = 37,447,704.68
  5. Step 5: Solve for x
    x = 37,447,704.68/7,013.04
  6. Step 6: Final answer
    x = 5,339.72

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.