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Finding the Fourth Proportional to 5,455.63, 7,528.77 and 2,971.63

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Solution

The fourth proportional to 5,455.63, 7,528.77 and 2,971.63 is: 4,100.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,455.63 : 7,528.77 = 2,971.63 : x
  2. Step 2: Convert to fraction form
    5,455.63/7,528.77 = 2,971.63/x
  3. Step 3: Cross multiply
    5,455.63x = 7,528.77 × 2,971.63
  4. Step 4: Simplify right side
    5,455.63x = 22,372,718.80
  5. Step 5: Solve for x
    x = 22,372,718.80/5,455.63
  6. Step 6: Final answer
    x = 4,100.85

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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.