Home / 2,270.88-3,133.40-1,386.96

Finding the Fourth Proportional to 2,270.88, 3,133.40 and 1,386.96

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Solution

The fourth proportional to 2,270.88, 3,133.40 and 1,386.96 is: 1,913.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,270.88 : 3,133.40 = 1,386.96 : x
  2. Step 2: Convert to fraction form
    2,270.88/3,133.40 = 1,386.96/x
  3. Step 3: Cross multiply
    2,270.88x = 3,133.40 × 1,386.96
  4. Step 4: Simplify right side
    2,270.88x = 4,345,900.46
  5. Step 5: Solve for x
    x = 4,345,900.46/2,270.88
  6. Step 6: Final answer
    x = 1,913.75

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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.