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Finding the Fourth Proportional to 4,913.12, 7,368.21 and 1,402.89

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Solution

The fourth proportional to 4,913.12, 7,368.21 and 1,402.89 is: 2,103.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,913.12 : 7,368.21 = 1,402.89 : x
  2. Step 2: Convert to fraction form
    4,913.12/7,368.21 = 1,402.89/x
  3. Step 3: Cross multiply
    4,913.12x = 7,368.21 × 1,402.89
  4. Step 4: Simplify right side
    4,913.12x = 10,336,788.13
  5. Step 5: Solve for x
    x = 10,336,788.13/4,913.12
  6. Step 6: Final answer
    x = 2,103.92

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.