Home / 3,779.16-5,215.06-2,100.68

Finding the Fourth Proportional to 3,779.16, 5,215.06 and 2,100.68

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Solution

The fourth proportional to 3,779.16, 5,215.06 and 2,100.68 is: 2,898.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,779.16 : 5,215.06 = 2,100.68 : x
  2. Step 2: Convert to fraction form
    3,779.16/5,215.06 = 2,100.68/x
  3. Step 3: Cross multiply
    3,779.16x = 5,215.06 × 2,100.68
  4. Step 4: Simplify right side
    3,779.16x = 10,955,172.24
  5. Step 5: Solve for x
    x = 10,955,172.24/3,779.16
  6. Step 6: Final answer
    x = 2,898.84

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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.