Home / 4,901.78-6,765.64-2,807.12

Finding the Fourth Proportional to 4,901.78, 6,765.64 and 2,807.12

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Solution

The fourth proportional to 4,901.78, 6,765.64 and 2,807.12 is: 3,874.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,901.78 : 6,765.64 = 2,807.12 : x
  2. Step 2: Convert to fraction form
    4,901.78/6,765.64 = 2,807.12/x
  3. Step 3: Cross multiply
    4,901.78x = 6,765.64 × 2,807.12
  4. Step 4: Simplify right side
    4,901.78x = 18,991,963.36
  5. Step 5: Solve for x
    x = 18,991,963.36/4,901.78
  6. Step 6: Final answer
    x = 3,874.50

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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.