Home / 1,369.28-2,053.44-547.40

Finding the Fourth Proportional to 1,369.28, 2,053.44 and 547.40

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Solution

The fourth proportional to 1,369.28, 2,053.44 and 547.40 is: 820.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,369.28 : 2,053.44 = 547.40 : x
  2. Step 2: Convert to fraction form
    1,369.28/2,053.44 = 547.40/x
  3. Step 3: Cross multiply
    1,369.28x = 2,053.44 × 547.40
  4. Step 4: Simplify right side
    1,369.28x = 1,124,053.06
  5. Step 5: Solve for x
    x = 1,124,053.06/1,369.28
  6. Step 6: Final answer
    x = 820.91

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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.