Home / 1,542.21-2,131.70-1,152.87

Finding the Fourth Proportional to 1,542.21, 2,131.70 and 1,152.87

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Solution

The fourth proportional to 1,542.21, 2,131.70 and 1,152.87 is: 1,593.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,542.21 : 2,131.70 = 1,152.87 : x
  2. Step 2: Convert to fraction form
    1,542.21/2,131.70 = 1,152.87/x
  3. Step 3: Cross multiply
    1,542.21x = 2,131.70 × 1,152.87
  4. Step 4: Simplify right side
    1,542.21x = 2,457,567.21
  5. Step 5: Solve for x
    x = 2,457,567.21/1,542.21
  6. Step 6: Final answer
    x = 1,593.54

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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.