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Finding the Fourth Proportional to 5,561.50, 8,342.26 and 1,457.50

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Solution

The fourth proportional to 5,561.50, 8,342.26 and 1,457.50 is: 2,186.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,561.50 : 8,342.26 = 1,457.50 : x
  2. Step 2: Convert to fraction form
    5,561.50/8,342.26 = 1,457.50/x
  3. Step 3: Cross multiply
    5,561.50x = 8,342.26 × 1,457.50
  4. Step 4: Simplify right side
    5,561.50x = 12,158,843.95
  5. Step 5: Solve for x
    x = 12,158,843.95/5,561.50
  6. Step 6: Final answer
    x = 2,186.25

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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.