Home / 7,042.32-9,718.70-3,898.50

Finding the Fourth Proportional to 7,042.32, 9,718.70 and 3,898.50

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Solution

The fourth proportional to 7,042.32, 9,718.70 and 3,898.50 is: 5,380.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,042.32 : 9,718.70 = 3,898.50 : x
  2. Step 2: Convert to fraction form
    7,042.32/9,718.70 = 3,898.50/x
  3. Step 3: Cross multiply
    7,042.32x = 9,718.70 × 3,898.50
  4. Step 4: Simplify right side
    7,042.32x = 37,888,332.46
  5. Step 5: Solve for x
    x = 37,888,332.46/7,042.32
  6. Step 6: Final answer
    x = 5,380.09

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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.