Home / 1,632.35-2,254.43-1,421.55

Finding the Fourth Proportional to 1,632.35, 2,254.43 and 1,421.55

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Solution

The fourth proportional to 1,632.35, 2,254.43 and 1,421.55 is: 1,963.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,632.35 : 2,254.43 = 1,421.55 : x
  2. Step 2: Convert to fraction form
    1,632.35/2,254.43 = 1,421.55/x
  3. Step 3: Cross multiply
    1,632.35x = 2,254.43 × 1,421.55
  4. Step 4: Simplify right side
    1,632.35x = 3,204,788.52
  5. Step 5: Solve for x
    x = 3,204,788.52/1,632.35
  6. Step 6: Final answer
    x = 1,963.29

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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.