Home / 1,415.04-2,113.14-1,399.80

Finding the Fourth Proportional to 1,415.04, 2,113.14 and 1,399.80

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Solution

The fourth proportional to 1,415.04, 2,113.14 and 1,399.80 is: 2,090.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,415.04 : 2,113.14 = 1,399.80 : x
  2. Step 2: Convert to fraction form
    1,415.04/2,113.14 = 1,399.80/x
  3. Step 3: Cross multiply
    1,415.04x = 2,113.14 × 1,399.80
  4. Step 4: Simplify right side
    1,415.04x = 2,957,973.37
  5. Step 5: Solve for x
    x = 2,957,973.37/1,415.04
  6. Step 6: Final answer
    x = 2,090.38

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.