Home / 1,215.25-1,820.21-1,004.63

Finding the Fourth Proportional to 1,215.25, 1,820.21 and 1,004.63

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Solution

The fourth proportional to 1,215.25, 1,820.21 and 1,004.63 is: 1,504.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,215.25 : 1,820.21 = 1,004.63 : x
  2. Step 2: Convert to fraction form
    1,215.25/1,820.21 = 1,004.63/x
  3. Step 3: Cross multiply
    1,215.25x = 1,820.21 × 1,004.63
  4. Step 4: Simplify right side
    1,215.25x = 1,828,637.57
  5. Step 5: Solve for x
    x = 1,828,637.57/1,215.25
  6. Step 6: Final answer
    x = 1,504.74

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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.