Home / 1,628.46-2,451.42-1,402.40

Finding the Fourth Proportional to 1,628.46, 2,451.42 and 1,402.40

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Solution

The fourth proportional to 1,628.46, 2,451.42 and 1,402.40 is: 2,111.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,628.46 : 2,451.42 = 1,402.40 : x
  2. Step 2: Convert to fraction form
    1,628.46/2,451.42 = 1,402.40/x
  3. Step 3: Cross multiply
    1,628.46x = 2,451.42 × 1,402.40
  4. Step 4: Simplify right side
    1,628.46x = 3,437,877.54
  5. Step 5: Solve for x
    x = 3,437,877.54/1,628.46
  6. Step 6: Final answer
    x = 2,111.12

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.