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Finding the Fourth Proportional to 2,148.28, 2,965.13 and 1,400.94

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Solution

The fourth proportional to 2,148.28, 2,965.13 and 1,400.94 is: 1,933.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,148.28 : 2,965.13 = 1,400.94 : x
  2. Step 2: Convert to fraction form
    2,148.28/2,965.13 = 1,400.94/x
  3. Step 3: Cross multiply
    2,148.28x = 2,965.13 × 1,400.94
  4. Step 4: Simplify right side
    2,148.28x = 4,153,954.60
  5. Step 5: Solve for x
    x = 4,153,954.60/2,148.28
  6. Step 6: Final answer
    x = 1,933.62

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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.