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Finding the Fourth Proportional to 2,825.55, 4,238.87 and 877.77

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Solution

The fourth proportional to 2,825.55, 4,238.87 and 877.77 is: 1,316.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,825.55 : 4,238.87 = 877.77 : x
  2. Step 2: Convert to fraction form
    2,825.55/4,238.87 = 877.77/x
  3. Step 3: Cross multiply
    2,825.55x = 4,238.87 × 877.77
  4. Step 4: Simplify right side
    2,825.55x = 3,720,748.53
  5. Step 5: Solve for x
    x = 3,720,748.53/2,825.55
  6. Step 6: Final answer
    x = 1,316.82

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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.