Home / 2,141.55-2,954.40-1,395.63

Finding the Fourth Proportional to 2,141.55, 2,954.40 and 1,395.63

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Solution

The fourth proportional to 2,141.55, 2,954.40 and 1,395.63 is: 1,925.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,141.55 : 2,954.40 = 1,395.63 : x
  2. Step 2: Convert to fraction form
    2,141.55/2,954.40 = 1,395.63/x
  3. Step 3: Cross multiply
    2,141.55x = 2,954.40 × 1,395.63
  4. Step 4: Simplify right side
    2,141.55x = 4,123,249.27
  5. Step 5: Solve for x
    x = 4,123,249.27/2,141.55
  6. Step 6: Final answer
    x = 1,925.36

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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.