Home / 1,403.27-1,935.30-1,071.11

Finding the Fourth Proportional to 1,403.27, 1,935.30 and 1,071.11

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Solution

The fourth proportional to 1,403.27, 1,935.30 and 1,071.11 is: 1,477.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,403.27 : 1,935.30 = 1,071.11 : x
  2. Step 2: Convert to fraction form
    1,403.27/1,935.30 = 1,071.11/x
  3. Step 3: Cross multiply
    1,403.27x = 1,935.30 × 1,071.11
  4. Step 4: Simplify right side
    1,403.27x = 2,072,919.18
  5. Step 5: Solve for x
    x = 2,072,919.18/1,403.27
  6. Step 6: Final answer
    x = 1,477.21

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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.