Home / 1,971.85-2,721.14-1,087.63

Finding the Fourth Proportional to 1,971.85, 2,721.14 and 1,087.63

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Solution

The fourth proportional to 1,971.85, 2,721.14 and 1,087.63 is: 1,500.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,971.85 : 2,721.14 = 1,087.63 : x
  2. Step 2: Convert to fraction form
    1,971.85/2,721.14 = 1,087.63/x
  3. Step 3: Cross multiply
    1,971.85x = 2,721.14 × 1,087.63
  4. Step 4: Simplify right side
    1,971.85x = 2,959,588.06
  5. Step 5: Solve for x
    x = 2,959,588.06/1,971.85
  6. Step 6: Final answer
    x = 1,500.92

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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.