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Finding the Fourth Proportional to 2,471.76, 3,411.36 and 1,424.16

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Solution

The fourth proportional to 2,471.76, 3,411.36 and 1,424.16 is: 1,965.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,471.76 : 3,411.36 = 1,424.16 : x
  2. Step 2: Convert to fraction form
    2,471.76/3,411.36 = 1,424.16/x
  3. Step 3: Cross multiply
    2,471.76x = 3,411.36 × 1,424.16
  4. Step 4: Simplify right side
    2,471.76x = 4,858,322.46
  5. Step 5: Solve for x
    x = 4,858,322.46/2,471.76
  6. Step 6: Final answer
    x = 1,965.53

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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.