Home / 1,435.76-2,139.22-1,341.48

Finding the Fourth Proportional to 1,435.76, 2,139.22 and 1,341.48

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Solution

The fourth proportional to 1,435.76, 2,139.22 and 1,341.48 is: 1,998.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,435.76 : 2,139.22 = 1,341.48 : x
  2. Step 2: Convert to fraction form
    1,435.76/2,139.22 = 1,341.48/x
  3. Step 3: Cross multiply
    1,435.76x = 2,139.22 × 1,341.48
  4. Step 4: Simplify right side
    1,435.76x = 2,869,720.85
  5. Step 5: Solve for x
    x = 2,869,720.85/1,435.76
  6. Step 6: Final answer
    x = 1,998.75

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.