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Finding the Fourth Proportional to 5,421.75, 7,437.02 and 5,374.95

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Solution

The fourth proportional to 5,421.75, 7,437.02 and 5,374.95 is: 7,372.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,421.75 : 7,437.02 = 5,374.95 : x
  2. Step 2: Convert to fraction form
    5,421.75/7,437.02 = 5,374.95/x
  3. Step 3: Cross multiply
    5,421.75x = 7,437.02 × 5,374.95
  4. Step 4: Simplify right side
    5,421.75x = 39,973,624.09
  5. Step 5: Solve for x
    x = 39,973,624.09/5,421.75
  6. Step 6: Final answer
    x = 7,372.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.