Home / 2,686.55-3,707.58-1,507.79

Finding the Fourth Proportional to 2,686.55, 3,707.58 and 1,507.79

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Solution

The fourth proportional to 2,686.55, 3,707.58 and 1,507.79 is: 2,080.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,686.55 : 3,707.58 = 1,507.79 : x
  2. Step 2: Convert to fraction form
    2,686.55/3,707.58 = 1,507.79/x
  3. Step 3: Cross multiply
    2,686.55x = 3,707.58 × 1,507.79
  4. Step 4: Simplify right side
    2,686.55x = 5,590,252.05
  5. Step 5: Solve for x
    x = 5,590,252.05/2,686.55
  6. Step 6: Final answer
    x = 2,080.83

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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.