Home / 2,686.18-3,707.08-2,021.84

Finding the Fourth Proportional to 2,686.18, 3,707.08 and 2,021.84

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Solution

The fourth proportional to 2,686.18, 3,707.08 and 2,021.84 is: 2,790.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,686.18 : 3,707.08 = 2,021.84 : x
  2. Step 2: Convert to fraction form
    2,686.18/3,707.08 = 2,021.84/x
  3. Step 3: Cross multiply
    2,686.18x = 3,707.08 × 2,021.84
  4. Step 4: Simplify right side
    2,686.18x = 7,495,122.63
  5. Step 5: Solve for x
    x = 7,495,122.63/2,686.18
  6. Step 6: Final answer
    x = 2,790.25

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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.