Home / 3,140.11-4,333.56-1,813.91

Finding the Fourth Proportional to 3,140.11, 4,333.56 and 1,813.91

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Solution

The fourth proportional to 3,140.11, 4,333.56 and 1,813.91 is: 2,503.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,140.11 : 4,333.56 = 1,813.91 : x
  2. Step 2: Convert to fraction form
    3,140.11/4,333.56 = 1,813.91/x
  3. Step 3: Cross multiply
    3,140.11x = 4,333.56 × 1,813.91
  4. Step 4: Simplify right side
    3,140.11x = 7,860,687.82
  5. Step 5: Solve for x
    x = 7,860,687.82/3,140.11
  6. Step 6: Final answer
    x = 2,503.32

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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.