Home / 1,567.26-2,161.93-1,381.20

Finding the Fourth Proportional to 1,567.26, 2,161.93 and 1,381.20

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Solution

The fourth proportional to 1,567.26, 2,161.93 and 1,381.20 is: 1,905.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,567.26 : 2,161.93 = 1,381.20 : x
  2. Step 2: Convert to fraction form
    1,567.26/2,161.93 = 1,381.20/x
  3. Step 3: Cross multiply
    1,567.26x = 2,161.93 × 1,381.20
  4. Step 4: Simplify right side
    1,567.26x = 2,986,057.72
  5. Step 5: Solve for x
    x = 2,986,057.72/1,567.26
  6. Step 6: Final answer
    x = 1,905.27

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1.5x scale

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.