Home / 3,156.91-4,356.55-1,812.58

Finding the Fourth Proportional to 3,156.91, 4,356.55 and 1,812.58

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Solution

The fourth proportional to 3,156.91, 4,356.55 and 1,812.58 is: 2,501.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,156.91 : 4,356.55 = 1,812.58 : x
  2. Step 2: Convert to fraction form
    3,156.91/4,356.55 = 1,812.58/x
  3. Step 3: Cross multiply
    3,156.91x = 4,356.55 × 1,812.58
  4. Step 4: Simplify right side
    3,156.91x = 7,896,573.62
  5. Step 5: Solve for x
    x = 7,896,573.62/3,156.91
  6. Step 6: Final answer
    x = 2,501.37

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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.