Home / 1,988.71-2,983.34-1,156.16

Finding the Fourth Proportional to 1,988.71, 2,983.34 and 1,156.16

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Solution

The fourth proportional to 1,988.71, 2,983.34 and 1,156.16 is: 1,734.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,988.71 : 2,983.34 = 1,156.16 : x
  2. Step 2: Convert to fraction form
    1,988.71/2,983.34 = 1,156.16/x
  3. Step 3: Cross multiply
    1,988.71x = 2,983.34 × 1,156.16
  4. Step 4: Simplify right side
    1,988.71x = 3,449,218.37
  5. Step 5: Solve for x
    x = 3,449,218.37/1,988.71
  6. Step 6: Final answer
    x = 1,734.40

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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.