Home / 1,635.68-2,256.84-1,139.36

Finding the Fourth Proportional to 1,635.68, 2,256.84 and 1,139.36

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Solution

The fourth proportional to 1,635.68, 2,256.84 and 1,139.36 is: 1,572.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,635.68 : 2,256.84 = 1,139.36 : x
  2. Step 2: Convert to fraction form
    1,635.68/2,256.84 = 1,139.36/x
  3. Step 3: Cross multiply
    1,635.68x = 2,256.84 × 1,139.36
  4. Step 4: Simplify right side
    1,635.68x = 2,571,353.22
  5. Step 5: Solve for x
    x = 2,571,353.22/1,635.68
  6. Step 6: Final answer
    x = 1,572.04

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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.