Home / 4,187.77-5,779.86-3,130.83

Finding the Fourth Proportional to 4,187.77, 5,779.86 and 3,130.83

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Solution

The fourth proportional to 4,187.77, 5,779.86 and 3,130.83 is: 4,321.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,187.77 : 5,779.86 = 3,130.83 : x
  2. Step 2: Convert to fraction form
    4,187.77/5,779.86 = 3,130.83/x
  3. Step 3: Cross multiply
    4,187.77x = 5,779.86 × 3,130.83
  4. Step 4: Simplify right side
    4,187.77x = 18,095,759.08
  5. Step 5: Solve for x
    x = 18,095,759.08/4,187.77
  6. Step 6: Final answer
    x = 4,321.10

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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.