Home / 1,435.13-2,153.40-613.59

Finding the Fourth Proportional to 1,435.13, 2,153.40 and 613.59

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Solution

The fourth proportional to 1,435.13, 2,153.40 and 613.59 is: 920.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,435.13 : 2,153.40 = 613.59 : x
  2. Step 2: Convert to fraction form
    1,435.13/2,153.40 = 613.59/x
  3. Step 3: Cross multiply
    1,435.13x = 2,153.40 × 613.59
  4. Step 4: Simplify right side
    1,435.13x = 1,321,304.71
  5. Step 5: Solve for x
    x = 1,321,304.71/1,435.13
  6. Step 6: Final answer
    x = 920.69

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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.