Home / 3,156.72-4,356.21-1,830.39

Finding the Fourth Proportional to 3,156.72, 4,356.21 and 1,830.39

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Solution

The fourth proportional to 3,156.72, 4,356.21 and 1,830.39 is: 2,525.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,156.72 : 4,356.21 = 1,830.39 : x
  2. Step 2: Convert to fraction form
    3,156.72/4,356.21 = 1,830.39/x
  3. Step 3: Cross multiply
    3,156.72x = 4,356.21 × 1,830.39
  4. Step 4: Simplify right side
    3,156.72x = 7,973,563.22
  5. Step 5: Solve for x
    x = 7,973,563.22/3,156.72
  6. Step 6: Final answer
    x = 2,525.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.