Home / 7,102.24-9,801.16-3,915.64

Finding the Fourth Proportional to 7,102.24, 9,801.16 and 3,915.64

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Solution

The fourth proportional to 7,102.24, 9,801.16 and 3,915.64 is: 5,403.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,102.24 : 9,801.16 = 3,915.64 : x
  2. Step 2: Convert to fraction form
    7,102.24/9,801.16 = 3,915.64/x
  3. Step 3: Cross multiply
    7,102.24x = 9,801.16 × 3,915.64
  4. Step 4: Simplify right side
    7,102.24x = 38,377,814.14
  5. Step 5: Solve for x
    x = 38,377,814.14/7,102.24
  6. Step 6: Final answer
    x = 5,403.62

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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.