Home / 1,638.20-2,259.82-1,017.08

Finding the Fourth Proportional to 1,638.20, 2,259.82 and 1,017.08

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Solution

The fourth proportional to 1,638.20, 2,259.82 and 1,017.08 is: 1,403.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,638.20 : 2,259.82 = 1,017.08 : x
  2. Step 2: Convert to fraction form
    1,638.20/2,259.82 = 1,017.08/x
  3. Step 3: Cross multiply
    1,638.20x = 2,259.82 × 1,017.08
  4. Step 4: Simplify right side
    1,638.20x = 2,298,417.73
  5. Step 5: Solve for x
    x = 2,298,417.73/1,638.20
  6. Step 6: Final answer
    x = 1,403.01

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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.