Home / 3,511.48-5,272.08-1,781.32

Finding the Fourth Proportional to 3,511.48, 5,272.08 and 1,781.32

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Solution

The fourth proportional to 3,511.48, 5,272.08 and 1,781.32 is: 2,674.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,511.48 : 5,272.08 = 1,781.32 : x
  2. Step 2: Convert to fraction form
    3,511.48/5,272.08 = 1,781.32/x
  3. Step 3: Cross multiply
    3,511.48x = 5,272.08 × 1,781.32
  4. Step 4: Simplify right side
    3,511.48x = 9,391,261.55
  5. Step 5: Solve for x
    x = 9,391,261.55/3,511.48
  6. Step 6: Final answer
    x = 2,674.45

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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.