Home / 3,187.30-4,779.74-1,239.06

Finding the Fourth Proportional to 3,187.30, 4,779.74 and 1,239.06

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Solution

The fourth proportional to 3,187.30, 4,779.74 and 1,239.06 is: 1,858.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,187.30 : 4,779.74 = 1,239.06 : x
  2. Step 2: Convert to fraction form
    3,187.30/4,779.74 = 1,239.06/x
  3. Step 3: Cross multiply
    3,187.30x = 4,779.74 × 1,239.06
  4. Step 4: Simplify right side
    3,187.30x = 5,922,384.64
  5. Step 5: Solve for x
    x = 5,922,384.64/3,187.30
  6. Step 6: Final answer
    x = 1,858.12

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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.