Home / 2,028.60-2,798.28-1,585.80

Finding the Fourth Proportional to 2,028.60, 2,798.28 and 1,585.80

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Solution

The fourth proportional to 2,028.60, 2,798.28 and 1,585.80 is: 2,187.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,028.60 : 2,798.28 = 1,585.80 : x
  2. Step 2: Convert to fraction form
    2,028.60/2,798.28 = 1,585.80/x
  3. Step 3: Cross multiply
    2,028.60x = 2,798.28 × 1,585.80
  4. Step 4: Simplify right side
    2,028.60x = 4,437,512.42
  5. Step 5: Solve for x
    x = 4,437,512.42/2,028.60
  6. Step 6: Final answer
    x = 2,187.48

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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.