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Finding the Fourth Proportional to 5,455.58, 7,528.74 and 2,971.58

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Solution

The fourth proportional to 5,455.58, 7,528.74 and 2,971.58 is: 4,100.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,455.58 : 7,528.74 = 2,971.58 : x
  2. Step 2: Convert to fraction form
    5,455.58/7,528.74 = 2,971.58/x
  3. Step 3: Cross multiply
    5,455.58x = 7,528.74 × 2,971.58
  4. Step 4: Simplify right side
    5,455.58x = 22,372,253.21
  5. Step 5: Solve for x
    x = 22,372,253.21/5,455.58
  6. Step 6: Final answer
    x = 4,100.80

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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.