Home / 2,914.07-4,021.47-1,587.78

Finding the Fourth Proportional to 2,914.07, 4,021.47 and 1,587.78

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Solution

The fourth proportional to 2,914.07, 4,021.47 and 1,587.78 is: 2,191.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,914.07 : 4,021.47 = 1,587.78 : x
  2. Step 2: Convert to fraction form
    2,914.07/4,021.47 = 1,587.78/x
  3. Step 3: Cross multiply
    2,914.07x = 4,021.47 × 1,587.78
  4. Step 4: Simplify right side
    2,914.07x = 6,385,181.59
  5. Step 5: Solve for x
    x = 6,385,181.59/2,914.07
  6. Step 6: Final answer
    x = 2,191.15

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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.