Home / 2,713.86-4,066.80-1,325.60

Finding the Fourth Proportional to 2,713.86, 4,066.80 and 1,325.60

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Solution

The fourth proportional to 2,713.86, 4,066.80 and 1,325.60 is: 1,986.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,713.86 : 4,066.80 = 1,325.60 : x
  2. Step 2: Convert to fraction form
    2,713.86/4,066.80 = 1,325.60/x
  3. Step 3: Cross multiply
    2,713.86x = 4,066.80 × 1,325.60
  4. Step 4: Simplify right side
    2,713.86x = 5,390,929.75
  5. Step 5: Solve for x
    x = 5,390,929.75/2,713.86
  6. Step 6: Final answer
    x = 1,986.44

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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.