Home / 1,628.61-2,248.97-1,040.18

Finding the Fourth Proportional to 1,628.61, 2,248.97 and 1,040.18

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Solution

The fourth proportional to 1,628.61, 2,248.97 and 1,040.18 is: 1,436.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,628.61 : 2,248.97 = 1,040.18 : x
  2. Step 2: Convert to fraction form
    1,628.61/2,248.97 = 1,040.18/x
  3. Step 3: Cross multiply
    1,628.61x = 2,248.97 × 1,040.18
  4. Step 4: Simplify right side
    1,628.61x = 2,339,317.17
  5. Step 5: Solve for x
    x = 2,339,317.17/1,628.61
  6. Step 6: Final answer
    x = 1,436.39

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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.