Home / 7,021.32-9,689.52-3,877.62

Finding the Fourth Proportional to 7,021.32, 9,689.52 and 3,877.62

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Solution

The fourth proportional to 7,021.32, 9,689.52 and 3,877.62 is: 5,351.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,021.32 : 9,689.52 = 3,877.62 : x
  2. Step 2: Convert to fraction form
    7,021.32/9,689.52 = 3,877.62/x
  3. Step 3: Cross multiply
    7,021.32x = 9,689.52 × 3,877.62
  4. Step 4: Simplify right side
    7,021.32x = 37,572,276.54
  5. Step 5: Solve for x
    x = 37,572,276.54/7,021.32
  6. Step 6: Final answer
    x = 5,351.17

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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.