Home / 1,556.28-2,320.00-1,439.64

Finding the Fourth Proportional to 1,556.28, 2,320.00 and 1,439.64

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Solution

The fourth proportional to 1,556.28, 2,320.00 and 1,439.64 is: 2,146.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,556.28 : 2,320.00 = 1,439.64 : x
  2. Step 2: Convert to fraction form
    1,556.28/2,320.00 = 1,439.64/x
  3. Step 3: Cross multiply
    1,556.28x = 2,320.00 × 1,439.64
  4. Step 4: Simplify right side
    1,556.28x = 3,339,961.20
  5. Step 5: Solve for x
    x = 3,339,961.20/1,556.28
  6. Step 6: Final answer
    x = 2,146.12

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.