Home / 3,140.22-4,332.51-1,813.74

Finding the Fourth Proportional to 3,140.22, 4,332.51 and 1,813.74

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Solution

The fourth proportional to 3,140.22, 4,332.51 and 1,813.74 is: 2,502.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,140.22 : 4,332.51 = 1,813.74 : x
  2. Step 2: Convert to fraction form
    3,140.22/4,332.51 = 1,813.74/x
  3. Step 3: Cross multiply
    3,140.22x = 4,332.51 × 1,813.74
  4. Step 4: Simplify right side
    3,140.22x = 7,858,046.69
  5. Step 5: Solve for x
    x = 7,858,046.69/3,140.22
  6. Step 6: Final answer
    x = 2,502.39

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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.