Home / 1,554.27-2,328.28-720.16

Finding the Fourth Proportional to 1,554.27, 2,328.28 and 720.16

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Solution

The fourth proportional to 1,554.27, 2,328.28 and 720.16 is: 1,078.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,554.27 : 2,328.28 = 720.16 : x
  2. Step 2: Convert to fraction form
    1,554.27/2,328.28 = 720.16/x
  3. Step 3: Cross multiply
    1,554.27x = 2,328.28 × 720.16
  4. Step 4: Simplify right side
    1,554.27x = 1,676,734.12
  5. Step 5: Solve for x
    x = 1,676,734.12/1,554.27
  6. Step 6: Final answer
    x = 1,078.79

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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.