Home / 5,079.80-7,009.49-2,810.82

Finding the Fourth Proportional to 5,079.80, 7,009.49 and 2,810.82

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Solution

The fourth proportional to 5,079.80, 7,009.49 and 2,810.82 is: 3,878.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,079.80 : 7,009.49 = 2,810.82 : x
  2. Step 2: Convert to fraction form
    5,079.80/7,009.49 = 2,810.82/x
  3. Step 3: Cross multiply
    5,079.80x = 7,009.49 × 2,810.82
  4. Step 4: Simplify right side
    5,079.80x = 19,702,400.63
  5. Step 5: Solve for x
    x = 19,702,400.63/5,079.80
  6. Step 6: Final answer
    x = 3,878.58

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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.