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Finding the Fourth Proportional to 4,881.60, 7,322.40 and 2,913.30

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Solution

The fourth proportional to 4,881.60, 7,322.40 and 2,913.30 is: 4,369.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,881.60 : 7,322.40 = 2,913.30 : x
  2. Step 2: Convert to fraction form
    4,881.60/7,322.40 = 2,913.30/x
  3. Step 3: Cross multiply
    4,881.60x = 7,322.40 × 2,913.30
  4. Step 4: Simplify right side
    4,881.60x = 21,332,347.92
  5. Step 5: Solve for x
    x = 21,332,347.92/4,881.60
  6. Step 6: Final answer
    x = 4,369.95

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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.