Home / 3,011.30-4,155.47-1,684.76

Finding the Fourth Proportional to 3,011.30, 4,155.47 and 1,684.76

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Solution

The fourth proportional to 3,011.30, 4,155.47 and 1,684.76 is: 2,324.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,011.30 : 4,155.47 = 1,684.76 : x
  2. Step 2: Convert to fraction form
    3,011.30/4,155.47 = 1,684.76/x
  3. Step 3: Cross multiply
    3,011.30x = 4,155.47 × 1,684.76
  4. Step 4: Simplify right side
    3,011.30x = 7,000,969.64
  5. Step 5: Solve for x
    x = 7,000,969.64/3,011.30
  6. Step 6: Final answer
    x = 2,324.90

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Half scale
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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.