Home / 3,135.90-4,704.83-1,287.17

Finding the Fourth Proportional to 3,135.90, 4,704.83 and 1,287.17

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Solution

The fourth proportional to 3,135.90, 4,704.83 and 1,287.17 is: 1,931.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,135.90 : 4,704.83 = 1,287.17 : x
  2. Step 2: Convert to fraction form
    3,135.90/4,704.83 = 1,287.17/x
  3. Step 3: Cross multiply
    3,135.90x = 4,704.83 × 1,287.17
  4. Step 4: Simplify right side
    3,135.90x = 6,055,886.07
  5. Step 5: Solve for x
    x = 6,055,886.07/3,135.90
  6. Step 6: Final answer
    x = 1,931.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.