Home / 7,102.36-9,800.60-3,915.11

Finding the Fourth Proportional to 7,102.36, 9,800.60 and 3,915.11

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Solution

The fourth proportional to 7,102.36, 9,800.60 and 3,915.11 is: 5,402.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,102.36 : 9,800.60 = 3,915.11 : x
  2. Step 2: Convert to fraction form
    7,102.36/9,800.60 = 3,915.11/x
  3. Step 3: Cross multiply
    7,102.36x = 9,800.60 × 3,915.11
  4. Step 4: Simplify right side
    7,102.36x = 38,370,427.07
  5. Step 5: Solve for x
    x = 38,370,427.07/7,102.36
  6. Step 6: Final answer
    x = 5,402.49

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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.