Home / 3,156.12-4,356.36-1,830.12

Finding the Fourth Proportional to 3,156.12, 4,356.36 and 1,830.12

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Solution

The fourth proportional to 3,156.12, 4,356.36 and 1,830.12 is: 2,526.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,156.12 : 4,356.36 = 1,830.12 : x
  2. Step 2: Convert to fraction form
    3,156.12/4,356.36 = 1,830.12/x
  3. Step 3: Cross multiply
    3,156.12x = 4,356.36 × 1,830.12
  4. Step 4: Simplify right side
    3,156.12x = 7,972,661.56
  5. Step 5: Solve for x
    x = 7,972,661.56/3,156.12
  6. Step 6: Final answer
    x = 2,526.10

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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.