Home / 1,675.20-2,512.80-810.24

Finding the Fourth Proportional to 1,675.20, 2,512.80 and 810.24

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Solution

The fourth proportional to 1,675.20, 2,512.80 and 810.24 is: 1,215.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,675.20 : 2,512.80 = 810.24 : x
  2. Step 2: Convert to fraction form
    1,675.20/2,512.80 = 810.24/x
  3. Step 3: Cross multiply
    1,675.20x = 2,512.80 × 810.24
  4. Step 4: Simplify right side
    1,675.20x = 2,035,971.07
  5. Step 5: Solve for x
    x = 2,035,971.07/1,675.20
  6. Step 6: Final answer
    x = 1,215.36

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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.