Home / 1,568.06-2,161.16-1,387.02

Finding the Fourth Proportional to 1,568.06, 2,161.16 and 1,387.02

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Solution

The fourth proportional to 1,568.06, 2,161.16 and 1,387.02 is: 1,911.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,568.06 : 2,161.16 = 1,387.02 : x
  2. Step 2: Convert to fraction form
    1,568.06/2,161.16 = 1,387.02/x
  3. Step 3: Cross multiply
    1,568.06x = 2,161.16 × 1,387.02
  4. Step 4: Simplify right side
    1,568.06x = 2,997,572.14
  5. Step 5: Solve for x
    x = 2,997,572.14/1,568.06
  6. Step 6: Final answer
    x = 1,911.64

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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.