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Finding the Fourth Proportional to 1,577.70, 2,362.88 and 1,401.80

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Solution

The fourth proportional to 1,577.70, 2,362.88 and 1,401.80 is: 2,099.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,577.70 : 2,362.88 = 1,401.80 : x
  2. Step 2: Convert to fraction form
    1,577.70/2,362.88 = 1,401.80/x
  3. Step 3: Cross multiply
    1,577.70x = 2,362.88 × 1,401.80
  4. Step 4: Simplify right side
    1,577.70x = 3,312,285.18
  5. Step 5: Solve for x
    x = 3,312,285.18/1,577.70
  6. Step 6: Final answer
    x = 2,099.44

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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.