Home / 4,187.88-5,779.98-2,420.51

Finding the Fourth Proportional to 4,187.88, 5,779.98 and 2,420.51

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Solution

The fourth proportional to 4,187.88, 5,779.98 and 2,420.51 is: 3,340.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,187.88 : 5,779.98 = 2,420.51 : x
  2. Step 2: Convert to fraction form
    4,187.88/5,779.98 = 2,420.51/x
  3. Step 3: Cross multiply
    4,187.88x = 5,779.98 × 2,420.51
  4. Step 4: Simplify right side
    4,187.88x = 13,990,470.49
  5. Step 5: Solve for x
    x = 13,990,470.49/4,187.88
  6. Step 6: Final answer
    x = 3,340.70

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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.