Home / 1,621.90-2,417.41-1,529.62

Finding the Fourth Proportional to 1,621.90, 2,417.41 and 1,529.62

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Solution

The fourth proportional to 1,621.90, 2,417.41 and 1,529.62 is: 2,279.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,621.90 : 2,417.41 = 1,529.62 : x
  2. Step 2: Convert to fraction form
    1,621.90/2,417.41 = 1,529.62/x
  3. Step 3: Cross multiply
    1,621.90x = 2,417.41 × 1,529.62
  4. Step 4: Simplify right side
    1,621.90x = 3,697,718.68
  5. Step 5: Solve for x
    x = 3,697,718.68/1,621.90
  6. Step 6: Final answer
    x = 2,279.88

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.