Home / 2,686.22-3,706.98-1,507.40

Finding the Fourth Proportional to 2,686.22, 3,706.98 and 1,507.40

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Solution

The fourth proportional to 2,686.22, 3,706.98 and 1,507.40 is: 2,080.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,686.22 : 3,706.98 = 1,507.40 : x
  2. Step 2: Convert to fraction form
    2,686.22/3,706.98 = 1,507.40/x
  3. Step 3: Cross multiply
    2,686.22x = 3,706.98 × 1,507.40
  4. Step 4: Simplify right side
    2,686.22x = 5,587,901.65
  5. Step 5: Solve for x
    x = 5,587,901.65/2,686.22
  6. Step 6: Final answer
    x = 2,080.21

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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.