Home / 2,914.28-4,021.70-1,587.99

Finding the Fourth Proportional to 2,914.28, 4,021.70 and 1,587.99

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Solution

The fourth proportional to 2,914.28, 4,021.70 and 1,587.99 is: 2,191.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,914.28 : 4,021.70 = 1,587.99 : x
  2. Step 2: Convert to fraction form
    2,914.28/4,021.70 = 1,587.99/x
  3. Step 3: Cross multiply
    2,914.28x = 4,021.70 × 1,587.99
  4. Step 4: Simplify right side
    2,914.28x = 6,386,419.38
  5. Step 5: Solve for x
    x = 6,386,419.38/2,914.28
  6. Step 6: Final answer
    x = 2,191.42

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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.