Home / 1,887.15-2,828.70-1,157.22

Finding the Fourth Proportional to 1,887.15, 2,828.70 and 1,157.22

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Solution

The fourth proportional to 1,887.15, 2,828.70 and 1,157.22 is: 1,734.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,887.15 : 2,828.70 = 1,157.22 : x
  2. Step 2: Convert to fraction form
    1,887.15/2,828.70 = 1,157.22/x
  3. Step 3: Cross multiply
    1,887.15x = 2,828.70 × 1,157.22
  4. Step 4: Simplify right side
    1,887.15x = 3,273,428.21
  5. Step 5: Solve for x
    x = 3,273,428.21/1,887.15
  6. Step 6: Final answer
    x = 1,734.59

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1.5x scale

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.