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Finding the Fourth Proportional to 1,425.01, 1,966.36 and 953.43

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Solution

The fourth proportional to 1,425.01, 1,966.36 and 953.43 is: 1,315.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,425.01 : 1,966.36 = 953.43 : x
  2. Step 2: Convert to fraction form
    1,425.01/1,966.36 = 953.43/x
  3. Step 3: Cross multiply
    1,425.01x = 1,966.36 × 953.43
  4. Step 4: Simplify right side
    1,425.01x = 1,874,796.49
  5. Step 5: Solve for x
    x = 1,874,796.49/1,425.01
  6. Step 6: Final answer
    x = 1,315.64

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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.