Home / 1,621.47-2,237.25-957.96

Finding the Fourth Proportional to 1,621.47, 2,237.25 and 957.96

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Solution

The fourth proportional to 1,621.47, 2,237.25 and 957.96 is: 1,321.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,621.47 : 2,237.25 = 957.96 : x
  2. Step 2: Convert to fraction form
    1,621.47/2,237.25 = 957.96/x
  3. Step 3: Cross multiply
    1,621.47x = 2,237.25 × 957.96
  4. Step 4: Simplify right side
    1,621.47x = 2,143,199.60
  5. Step 5: Solve for x
    x = 2,143,199.60/1,621.47
  6. Step 6: Final answer
    x = 1,321.76

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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.