Home / 7,340.69-11,007.42-5,120.58

Finding the Fourth Proportional to 7,340.69, 11,007.42 and 5,120.58

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Solution

The fourth proportional to 7,340.69, 11,007.42 and 5,120.58 is: 7,678.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,340.69 : 11,007.42 = 5,120.58 : x
  2. Step 2: Convert to fraction form
    7,340.69/11,007.42 = 5,120.58/x
  3. Step 3: Cross multiply
    7,340.69x = 11,007.42 × 5,120.58
  4. Step 4: Simplify right side
    7,340.69x = 56,364,374.70
  5. Step 5: Solve for x
    x = 56,364,374.70/7,340.69
  6. Step 6: Final answer
    x = 7,678.35

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1.5x scale

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.