Home / 2,656.68-3,985.05-1,155.54

Finding the Fourth Proportional to 2,656.68, 3,985.05 and 1,155.54

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Solution

The fourth proportional to 2,656.68, 3,985.05 and 1,155.54 is: 1,733.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,656.68 : 3,985.05 = 1,155.54 : x
  2. Step 2: Convert to fraction form
    2,656.68/3,985.05 = 1,155.54/x
  3. Step 3: Cross multiply
    2,656.68x = 3,985.05 × 1,155.54
  4. Step 4: Simplify right side
    2,656.68x = 4,604,884.68
  5. Step 5: Solve for x
    x = 4,604,884.68/2,656.68
  6. Step 6: Final answer
    x = 1,733.32

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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.