Home / 2,601.60-3,586.08-2,128.80

Finding the Fourth Proportional to 2,601.60, 3,586.08 and 2,128.80

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Solution

The fourth proportional to 2,601.60, 3,586.08 and 2,128.80 is: 2,934.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,601.60 : 3,586.08 = 2,128.80 : x
  2. Step 2: Convert to fraction form
    2,601.60/3,586.08 = 2,128.80/x
  3. Step 3: Cross multiply
    2,601.60x = 3,586.08 × 2,128.80
  4. Step 4: Simplify right side
    2,601.60x = 7,634,047.10
  5. Step 5: Solve for x
    x = 7,634,047.10/2,601.60
  6. Step 6: Final answer
    x = 2,934.37

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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.