Home / 1,972.01-2,721.40-1,087.70

Finding the Fourth Proportional to 1,972.01, 2,721.40 and 1,087.70

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Solution

The fourth proportional to 1,972.01, 2,721.40 and 1,087.70 is: 1,501.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,972.01 : 2,721.40 = 1,087.70 : x
  2. Step 2: Convert to fraction form
    1,972.01/2,721.40 = 1,087.70/x
  3. Step 3: Cross multiply
    1,972.01x = 2,721.40 × 1,087.70
  4. Step 4: Simplify right side
    1,972.01x = 2,960,050.45
  5. Step 5: Solve for x
    x = 2,960,050.45/1,972.01
  6. Step 6: Final answer
    x = 1,501.03

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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.