Home / 2,538.90-3,503.48-1,419.80

Finding the Fourth Proportional to 2,538.90, 3,503.48 and 1,419.80

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Solution

The fourth proportional to 2,538.90, 3,503.48 and 1,419.80 is: 1,959.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,538.90 : 3,503.48 = 1,419.80 : x
  2. Step 2: Convert to fraction form
    2,538.90/3,503.48 = 1,419.80/x
  3. Step 3: Cross multiply
    2,538.90x = 3,503.48 × 1,419.80
  4. Step 4: Simplify right side
    2,538.90x = 4,974,216.29
  5. Step 5: Solve for x
    x = 4,974,216.29/2,538.90
  6. Step 6: Final answer
    x = 1,959.20

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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.