Home / 3,059.40-4,215.42-2,807.76

Finding the Fourth Proportional to 3,059.40, 4,215.42 and 2,807.76

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Solution

The fourth proportional to 3,059.40, 4,215.42 and 2,807.76 is: 3,868.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,059.40 : 4,215.42 = 2,807.76 : x
  2. Step 2: Convert to fraction form
    3,059.40/4,215.42 = 2,807.76/x
  3. Step 3: Cross multiply
    3,059.40x = 4,215.42 × 2,807.76
  4. Step 4: Simplify right side
    3,059.40x = 11,835,887.66
  5. Step 5: Solve for x
    x = 11,835,887.66/3,059.40
  6. Step 6: Final answer
    x = 3,868.70

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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.