Home / 1,988.01-2,743.57-1,148.87

Finding the Fourth Proportional to 1,988.01, 2,743.57 and 1,148.87

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Solution

The fourth proportional to 1,988.01, 2,743.57 and 1,148.87 is: 1,585.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,988.01 : 2,743.57 = 1,148.87 : x
  2. Step 2: Convert to fraction form
    1,988.01/2,743.57 = 1,148.87/x
  3. Step 3: Cross multiply
    1,988.01x = 2,743.57 × 1,148.87
  4. Step 4: Simplify right side
    1,988.01x = 3,151,991.55
  5. Step 5: Solve for x
    x = 3,151,991.55/1,988.01
  6. Step 6: Final answer
    x = 1,585.50

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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.