Home / 1,591.96-2,389.74-1,127.80

Finding the Fourth Proportional to 1,591.96, 2,389.74 and 1,127.80

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Solution

The fourth proportional to 1,591.96, 2,389.74 and 1,127.80 is: 1,692.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,591.96 : 2,389.74 = 1,127.80 : x
  2. Step 2: Convert to fraction form
    1,591.96/2,389.74 = 1,127.80/x
  3. Step 3: Cross multiply
    1,591.96x = 2,389.74 × 1,127.80
  4. Step 4: Simplify right side
    1,591.96x = 2,695,148.77
  5. Step 5: Solve for x
    x = 2,695,148.77/1,591.96
  6. Step 6: Final answer
    x = 1,692.98

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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.