Home / 1,271.04-1,904.94-1,057.20

Finding the Fourth Proportional to 1,271.04, 1,904.94 and 1,057.20

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Solution

The fourth proportional to 1,271.04, 1,904.94 and 1,057.20 is: 1,584.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,271.04 : 1,904.94 = 1,057.20 : x
  2. Step 2: Convert to fraction form
    1,271.04/1,904.94 = 1,057.20/x
  3. Step 3: Cross multiply
    1,271.04x = 1,904.94 × 1,057.20
  4. Step 4: Simplify right side
    1,271.04x = 2,013,902.57
  5. Step 5: Solve for x
    x = 2,013,902.57/1,271.04
  6. Step 6: Final answer
    x = 1,584.45

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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.