Home / 2,389.40-3,563.66-2,098.80

Finding the Fourth Proportional to 2,389.40, 3,563.66 and 2,098.80

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Solution

The fourth proportional to 2,389.40, 3,563.66 and 2,098.80 is: 3,130.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,389.40 : 3,563.66 = 2,098.80 : x
  2. Step 2: Convert to fraction form
    2,389.40/3,563.66 = 2,098.80/x
  3. Step 3: Cross multiply
    2,389.40x = 3,563.66 × 2,098.80
  4. Step 4: Simplify right side
    2,389.40x = 7,479,399.11
  5. Step 5: Solve for x
    x = 7,479,399.11/2,389.40
  6. Step 6: Final answer
    x = 3,130.25

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1.5x scale

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.