Home / 1,445.16-2,157.99-1,429.91

Finding the Fourth Proportional to 1,445.16, 2,157.99 and 1,429.91

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Solution

The fourth proportional to 1,445.16, 2,157.99 and 1,429.91 is: 2,135.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,445.16 : 2,157.99 = 1,429.91 : x
  2. Step 2: Convert to fraction form
    1,445.16/2,157.99 = 1,429.91/x
  3. Step 3: Cross multiply
    1,445.16x = 2,157.99 × 1,429.91
  4. Step 4: Simplify right side
    1,445.16x = 3,085,720.69
  5. Step 5: Solve for x
    x = 3,085,720.69/1,445.16
  6. Step 6: Final answer
    x = 2,135.21

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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.