Home / 2,807.04-3,871.20-2,177.76

Finding the Fourth Proportional to 2,807.04, 3,871.20 and 2,177.76

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Solution

The fourth proportional to 2,807.04, 3,871.20 and 2,177.76 is: 3,003.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,807.04 : 3,871.20 = 2,177.76 : x
  2. Step 2: Convert to fraction form
    2,807.04/3,871.20 = 2,177.76/x
  3. Step 3: Cross multiply
    2,807.04x = 3,871.20 × 2,177.76
  4. Step 4: Simplify right side
    2,807.04x = 8,430,544.51
  5. Step 5: Solve for x
    x = 8,430,544.51/2,807.04
  6. Step 6: Final answer
    x = 3,003.36

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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.