Home / 3,187.60-4,782.18-1,240.36

Finding the Fourth Proportional to 3,187.60, 4,782.18 and 1,240.36

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Solution

The fourth proportional to 3,187.60, 4,782.18 and 1,240.36 is: 1,860.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,187.60 : 4,782.18 = 1,240.36 : x
  2. Step 2: Convert to fraction form
    3,187.60/4,782.18 = 1,240.36/x
  3. Step 3: Cross multiply
    3,187.60x = 4,782.18 × 1,240.36
  4. Step 4: Simplify right side
    3,187.60x = 5,931,624.78
  5. Step 5: Solve for x
    x = 5,931,624.78/3,187.60
  6. Step 6: Final answer
    x = 1,860.84

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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.