Home / 2,825.40-3,899.70-1,763.76

Finding the Fourth Proportional to 2,825.40, 3,899.70 and 1,763.76

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Solution

The fourth proportional to 2,825.40, 3,899.70 and 1,763.76 is: 2,434.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,825.40 : 3,899.70 = 1,763.76 : x
  2. Step 2: Convert to fraction form
    2,825.40/3,899.70 = 1,763.76/x
  3. Step 3: Cross multiply
    2,825.40x = 3,899.70 × 1,763.76
  4. Step 4: Simplify right side
    2,825.40x = 6,878,134.87
  5. Step 5: Solve for x
    x = 6,878,134.87/2,825.40
  6. Step 6: Final answer
    x = 2,434.39

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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.