Home / 1,661.30-2,279.24-1,618.19

Finding the Fourth Proportional to 1,661.30, 2,279.24 and 1,618.19

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Solution

The fourth proportional to 1,661.30, 2,279.24 and 1,618.19 is: 2,220.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,661.30 : 2,279.24 = 1,618.19 : x
  2. Step 2: Convert to fraction form
    1,661.30/2,279.24 = 1,618.19/x
  3. Step 3: Cross multiply
    1,661.30x = 2,279.24 × 1,618.19
  4. Step 4: Simplify right side
    1,661.30x = 3,688,236.02
  5. Step 5: Solve for x
    x = 3,688,236.02/1,661.30
  6. Step 6: Final answer
    x = 2,220.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.