Home / 1,564.44-2,155.20-1,271.64

Finding the Fourth Proportional to 1,564.44, 2,155.20 and 1,271.64

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Solution

The fourth proportional to 1,564.44, 2,155.20 and 1,271.64 is: 1,751.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,564.44 : 2,155.20 = 1,271.64 : x
  2. Step 2: Convert to fraction form
    1,564.44/2,155.20 = 1,271.64/x
  3. Step 3: Cross multiply
    1,564.44x = 2,155.20 × 1,271.64
  4. Step 4: Simplify right side
    1,564.44x = 2,740,638.53
  5. Step 5: Solve for x
    x = 2,740,638.53/1,564.44
  6. Step 6: Final answer
    x = 1,751.83

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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.