Home / 7,013.74-9,678.99-3,870.02

Finding the Fourth Proportional to 7,013.74, 9,678.99 and 3,870.02

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Solution

The fourth proportional to 7,013.74, 9,678.99 and 3,870.02 is: 5,340.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,013.74 : 9,678.99 = 3,870.02 : x
  2. Step 2: Convert to fraction form
    7,013.74/9,678.99 = 3,870.02/x
  3. Step 3: Cross multiply
    7,013.74x = 9,678.99 × 3,870.02
  4. Step 4: Simplify right side
    7,013.74x = 37,457,884.88
  5. Step 5: Solve for x
    x = 37,457,884.88/7,013.74
  6. Step 6: Final answer
    x = 5,340.64

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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.