Home / 1,455.28-2,008.98-1,139.99

Finding the Fourth Proportional to 1,455.28, 2,008.98 and 1,139.99

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Solution

The fourth proportional to 1,455.28, 2,008.98 and 1,139.99 is: 1,573.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,455.28 : 2,008.98 = 1,139.99 : x
  2. Step 2: Convert to fraction form
    1,455.28/2,008.98 = 1,139.99/x
  3. Step 3: Cross multiply
    1,455.28x = 2,008.98 × 1,139.99
  4. Step 4: Simplify right side
    1,455.28x = 2,290,217.11
  5. Step 5: Solve for x
    x = 2,290,217.11/1,455.28
  6. Step 6: Final answer
    x = 1,573.73

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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.