Home / 1,621.91-2,430.77-1,329.63

Finding the Fourth Proportional to 1,621.91, 2,430.77 and 1,329.63

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Solution

The fourth proportional to 1,621.91, 2,430.77 and 1,329.63 is: 1,992.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,621.91 : 2,430.77 = 1,329.63 : x
  2. Step 2: Convert to fraction form
    1,621.91/2,430.77 = 1,329.63/x
  3. Step 3: Cross multiply
    1,621.91x = 2,430.77 × 1,329.63
  4. Step 4: Simplify right side
    1,621.91x = 3,232,018.07
  5. Step 5: Solve for x
    x = 3,232,018.07/1,621.91
  6. Step 6: Final answer
    x = 1,992.73

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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.