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Finding the Fourth Proportional to 5,196, 7,170.48 and 2,838.15

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Solution

The fourth proportional to 5,196, 7,170.48 and 2,838.15 is: 3,916.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,196 : 7,170.48 = 2,838.15 : x
  2. Step 2: Convert to fraction form
    5,196/7,170.48 = 2,838.15/x
  3. Step 3: Cross multiply
    5,196x = 7,170.48 × 2,838.15
  4. Step 4: Simplify right side
    5,196x = 20,350,897.81
  5. Step 5: Solve for x
    x = 20,350,897.81/5,196
  6. Step 6: Final answer
    x = 3,916.65

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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.