Home / 2,084.51-3,127.65-913.91

Finding the Fourth Proportional to 2,084.51, 3,127.65 and 913.91

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Solution

The fourth proportional to 2,084.51, 3,127.65 and 913.91 is: 1,371.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,084.51 : 3,127.65 = 913.91 : x
  2. Step 2: Convert to fraction form
    2,084.51/3,127.65 = 913.91/x
  3. Step 3: Cross multiply
    2,084.51x = 3,127.65 × 913.91
  4. Step 4: Simplify right side
    2,084.51x = 2,858,395.00
  5. Step 5: Solve for x
    x = 2,858,395.00/2,084.51
  6. Step 6: Final answer
    x = 1,371.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.