Home / 2,172.04-2,995.44-1,425.72

Finding the Fourth Proportional to 2,172.04, 2,995.44 and 1,425.72

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Solution

The fourth proportional to 2,172.04, 2,995.44 and 1,425.72 is: 1,966.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,172.04 : 2,995.44 = 1,425.72 : x
  2. Step 2: Convert to fraction form
    2,172.04/2,995.44 = 1,425.72/x
  3. Step 3: Cross multiply
    2,172.04x = 2,995.44 × 1,425.72
  4. Step 4: Simplify right side
    2,172.04x = 4,270,658.72
  5. Step 5: Solve for x
    x = 4,270,658.72/2,172.04
  6. Step 6: Final answer
    x = 1,966.20

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1.5x scale

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.