Home / 1,988.28-2,976.84-1,370.52

Finding the Fourth Proportional to 1,988.28, 2,976.84 and 1,370.52

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Solution

The fourth proportional to 1,988.28, 2,976.84 and 1,370.52 is: 2,051.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,988.28 : 2,976.84 = 1,370.52 : x
  2. Step 2: Convert to fraction form
    1,988.28/2,976.84 = 1,370.52/x
  3. Step 3: Cross multiply
    1,988.28x = 2,976.84 × 1,370.52
  4. Step 4: Simplify right side
    1,988.28x = 4,079,818.76
  5. Step 5: Solve for x
    x = 4,079,818.76/1,988.28
  6. Step 6: Final answer
    x = 2,051.93

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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.