Home / 3,155.12-4,729.76-1,205.76

Finding the Fourth Proportional to 3,155.12, 4,729.76 and 1,205.76

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Solution

The fourth proportional to 3,155.12, 4,729.76 and 1,205.76 is: 1,807.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,155.12 : 4,729.76 = 1,205.76 : x
  2. Step 2: Convert to fraction form
    3,155.12/4,729.76 = 1,205.76/x
  3. Step 3: Cross multiply
    3,155.12x = 4,729.76 × 1,205.76
  4. Step 4: Simplify right side
    3,155.12x = 5,702,955.42
  5. Step 5: Solve for x
    x = 5,702,955.42/3,155.12
  6. Step 6: Final answer
    x = 1,807.52

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.