Home / 1,127.18-1,690.34-477.96

Finding the Fourth Proportional to 1,127.18, 1,690.34 and 477.96

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Solution

The fourth proportional to 1,127.18, 1,690.34 and 477.96 is: 716.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,127.18 : 1,690.34 = 477.96 : x
  2. Step 2: Convert to fraction form
    1,127.18/1,690.34 = 477.96/x
  3. Step 3: Cross multiply
    1,127.18x = 1,690.34 × 477.96
  4. Step 4: Simplify right side
    1,127.18x = 807,914.91
  5. Step 5: Solve for x
    x = 807,914.91/1,127.18
  6. Step 6: Final answer
    x = 716.76

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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.