Home / 1,434.16-2,149.41-611.60

Finding the Fourth Proportional to 1,434.16, 2,149.41 and 611.60

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Solution

The fourth proportional to 1,434.16, 2,149.41 and 611.60 is: 916.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,434.16 : 2,149.41 = 611.60 : x
  2. Step 2: Convert to fraction form
    1,434.16/2,149.41 = 611.60/x
  3. Step 3: Cross multiply
    1,434.16x = 2,149.41 × 611.60
  4. Step 4: Simplify right side
    1,434.16x = 1,314,581.07
  5. Step 5: Solve for x
    x = 1,314,581.07/1,434.16
  6. Step 6: Final answer
    x = 916.62

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.