Home / 2,274.80-3,135.81-1,390.01

Finding the Fourth Proportional to 2,274.80, 3,135.81 and 1,390.01

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Solution

The fourth proportional to 2,274.80, 3,135.81 and 1,390.01 is: 1,916.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,274.80 : 3,135.81 = 1,390.01 : x
  2. Step 2: Convert to fraction form
    2,274.80/3,135.81 = 1,390.01/x
  3. Step 3: Cross multiply
    2,274.80x = 3,135.81 × 1,390.01
  4. Step 4: Simplify right side
    2,274.80x = 4,358,796.79
  5. Step 5: Solve for x
    x = 4,358,796.79/2,274.80
  6. Step 6: Final answer
    x = 1,916.13

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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.