Home / 1,645.16-2,271.15-1,271.30

Finding the Fourth Proportional to 1,645.16, 2,271.15 and 1,271.30

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Solution

The fourth proportional to 1,645.16, 2,271.15 and 1,271.30 is: 1,755.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,645.16 : 2,271.15 = 1,271.30 : x
  2. Step 2: Convert to fraction form
    1,645.16/2,271.15 = 1,271.30/x
  3. Step 3: Cross multiply
    1,645.16x = 2,271.15 × 1,271.30
  4. Step 4: Simplify right side
    1,645.16x = 2,887,301.64
  5. Step 5: Solve for x
    x = 2,887,301.64/1,645.16
  6. Step 6: Final answer
    x = 1,755.03

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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.