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Finding the Fourth Proportional to 3,750.84, 5,623.21 and 1,561.21

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Solution

The fourth proportional to 3,750.84, 5,623.21 and 1,561.21 is: 2,340.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,750.84 : 5,623.21 = 1,561.21 : x
  2. Step 2: Convert to fraction form
    3,750.84/5,623.21 = 1,561.21/x
  3. Step 3: Cross multiply
    3,750.84x = 5,623.21 × 1,561.21
  4. Step 4: Simplify right side
    3,750.84x = 8,779,011.68
  5. Step 5: Solve for x
    x = 8,779,011.68/3,750.84
  6. Step 6: Final answer
    x = 2,340.55

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1.5x scale

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.