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Finding the Fourth Proportional to 3,609.47, 4,981.09 and 1,953.47

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Solution

The fourth proportional to 3,609.47, 4,981.09 and 1,953.47 is: 2,695.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,609.47 : 4,981.09 = 1,953.47 : x
  2. Step 2: Convert to fraction form
    3,609.47/4,981.09 = 1,953.47/x
  3. Step 3: Cross multiply
    3,609.47x = 4,981.09 × 1,953.47
  4. Step 4: Simplify right side
    3,609.47x = 9,730,400.11
  5. Step 5: Solve for x
    x = 9,730,400.11/3,609.47
  6. Step 6: Final answer
    x = 2,695.80

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1.5x scale

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.