Home / 2,681.32-3,700.43-1,687.45

Finding the Fourth Proportional to 2,681.32, 3,700.43 and 1,687.45

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Solution

The fourth proportional to 2,681.32, 3,700.43 and 1,687.45 is: 2,328.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,681.32 : 3,700.43 = 1,687.45 : x
  2. Step 2: Convert to fraction form
    2,681.32/3,700.43 = 1,687.45/x
  3. Step 3: Cross multiply
    2,681.32x = 3,700.43 × 1,687.45
  4. Step 4: Simplify right side
    2,681.32x = 6,244,281.44
  5. Step 5: Solve for x
    x = 6,244,281.44/2,681.32
  6. Step 6: Final answer
    x = 2,328.81

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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.