Home / 3,156.88-4,356.03-1,830.34

Finding the Fourth Proportional to 3,156.88, 4,356.03 and 1,830.34

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Solution

The fourth proportional to 3,156.88, 4,356.03 and 1,830.34 is: 2,525.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,156.88 : 4,356.03 = 1,830.34 : x
  2. Step 2: Convert to fraction form
    3,156.88/4,356.03 = 1,830.34/x
  3. Step 3: Cross multiply
    3,156.88x = 4,356.03 × 1,830.34
  4. Step 4: Simplify right side
    3,156.88x = 7,973,015.95
  5. Step 5: Solve for x
    x = 7,973,015.95/3,156.88
  6. Step 6: Final answer
    x = 2,525.60

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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.