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Finding the Fourth Proportional to 1,953.60, 2,937.60 and 1,636.80

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Solution

The fourth proportional to 1,953.60, 2,937.60 and 1,636.80 is: 2,461.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,953.60 : 2,937.60 = 1,636.80 : x
  2. Step 2: Convert to fraction form
    1,953.60/2,937.60 = 1,636.80/x
  3. Step 3: Cross multiply
    1,953.60x = 2,937.60 × 1,636.80
  4. Step 4: Simplify right side
    1,953.60x = 4,808,263.68
  5. Step 5: Solve for x
    x = 4,808,263.68/1,953.60
  6. Step 6: Final answer
    x = 2,461.23

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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.