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Finding the Fourth Proportional to 1,572, 2,353.74 and 1,520.97

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Solution

The fourth proportional to 1,572, 2,353.74 and 1,520.97 is: 2,277.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,572 : 2,353.74 = 1,520.97 : x
  2. Step 2: Convert to fraction form
    1,572/2,353.74 = 1,520.97/x
  3. Step 3: Cross multiply
    1,572x = 2,353.74 × 1,520.97
  4. Step 4: Simplify right side
    1,572x = 3,579,967.93
  5. Step 5: Solve for x
    x = 3,579,967.93/1,572
  6. Step 6: Final answer
    x = 2,277.33

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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.