Home / 1,642.28-2,267.20-1,113.96

Finding the Fourth Proportional to 1,642.28, 2,267.20 and 1,113.96

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Solution

The fourth proportional to 1,642.28, 2,267.20 and 1,113.96 is: 1,537.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,642.28 : 2,267.20 = 1,113.96 : x
  2. Step 2: Convert to fraction form
    1,642.28/2,267.20 = 1,113.96/x
  3. Step 3: Cross multiply
    1,642.28x = 2,267.20 × 1,113.96
  4. Step 4: Simplify right side
    1,642.28x = 2,525,570.11
  5. Step 5: Solve for x
    x = 2,525,570.11/1,642.28
  6. Step 6: Final answer
    x = 1,537.84

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.