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Finding the Fourth Proportional to 1,424.20, 1,965.74 and 952.12

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Solution

The fourth proportional to 1,424.20, 1,965.74 and 952.12 is: 1,314.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,424.20 : 1,965.74 = 952.12 : x
  2. Step 2: Convert to fraction form
    1,424.20/1,965.74 = 952.12/x
  3. Step 3: Cross multiply
    1,424.20x = 1,965.74 × 952.12
  4. Step 4: Simplify right side
    1,424.20x = 1,871,620.37
  5. Step 5: Solve for x
    x = 1,871,620.37/1,424.20
  6. Step 6: Final answer
    x = 1,314.16

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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.