Home / 2,569.42-3,853.32-720.39

Finding the Fourth Proportional to 2,569.42, 3,853.32 and 720.39

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Solution

The fourth proportional to 2,569.42, 3,853.32 and 720.39 is: 1,080.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,569.42 : 3,853.32 = 720.39 : x
  2. Step 2: Convert to fraction form
    2,569.42/3,853.32 = 720.39/x
  3. Step 3: Cross multiply
    2,569.42x = 3,853.32 × 720.39
  4. Step 4: Simplify right side
    2,569.42x = 2,775,893.19
  5. Step 5: Solve for x
    x = 2,775,893.19/2,569.42
  6. Step 6: Final answer
    x = 1,080.36

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1.5x scale

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.