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Finding the Fourth Proportional to 2,929.68, 4,390.20 and 2,353.68

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Solution

The fourth proportional to 2,929.68, 4,390.20 and 2,353.68 is: 3,527.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,929.68 : 4,390.20 = 2,353.68 : x
  2. Step 2: Convert to fraction form
    2,929.68/4,390.20 = 2,353.68/x
  3. Step 3: Cross multiply
    2,929.68x = 4,390.20 × 2,353.68
  4. Step 4: Simplify right side
    2,929.68x = 10,333,125.94
  5. Step 5: Solve for x
    x = 10,333,125.94/2,929.68
  6. Step 6: Final answer
    x = 3,527.05

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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.