Home / 2,986.08-4,120.90-1,660.10

Finding the Fourth Proportional to 2,986.08, 4,120.90 and 1,660.10

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Solution

The fourth proportional to 2,986.08, 4,120.90 and 1,660.10 is: 2,291.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,986.08 : 4,120.90 = 1,660.10 : x
  2. Step 2: Convert to fraction form
    2,986.08/4,120.90 = 1,660.10/x
  3. Step 3: Cross multiply
    2,986.08x = 4,120.90 × 1,660.10
  4. Step 4: Simplify right side
    2,986.08x = 6,841,106.09
  5. Step 5: Solve for x
    x = 6,841,106.09/2,986.08
  6. Step 6: Final answer
    x = 2,291.00

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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.