Home / 7,171,912.78-9,896,951.51-3,908,657.50

Finding the Fourth Proportional to 7,171,912.78, 9,896,951.51 and 3,908,657.50

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Solution

The fourth proportional to 7,171,912.78, 9,896,951.51 and 3,908,657.50 is: 5,393,790.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,171,912.78 : 9,896,951.51 = 3,908,657.50 : x
  2. Step 2: Convert to fraction form
    7,171,912.78/9,896,951.51 = 3,908,657.50/x
  3. Step 3: Cross multiply
    7,171,912.78x = 9,896,951.51 × 3,908,657.50
  4. Step 4: Simplify right side
    7,171,912.78x = 38,683,793,702,412.16
  5. Step 5: Solve for x
    x = 38,683,793,702,412.16/7,171,912.78
  6. Step 6: Final answer
    x = 5,393,790.32

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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.