Home / 2,312.28-3,189.58-1,681.97

Finding the Fourth Proportional to 2,312.28, 3,189.58 and 1,681.97

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Solution

The fourth proportional to 2,312.28, 3,189.58 and 1,681.97 is: 2,320.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,312.28 : 3,189.58 = 1,681.97 : x
  2. Step 2: Convert to fraction form
    2,312.28/3,189.58 = 1,681.97/x
  3. Step 3: Cross multiply
    2,312.28x = 3,189.58 × 1,681.97
  4. Step 4: Simplify right side
    2,312.28x = 5,364,757.72
  5. Step 5: Solve for x
    x = 5,364,757.72/2,312.28
  6. Step 6: Final answer
    x = 2,320.12

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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.