Home / 1,742.68-2,614.32-921.64

Finding the Fourth Proportional to 1,742.68, 2,614.32 and 921.64

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Solution

The fourth proportional to 1,742.68, 2,614.32 and 921.64 is: 1,382.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,742.68 : 2,614.32 = 921.64 : x
  2. Step 2: Convert to fraction form
    1,742.68/2,614.32 = 921.64/x
  3. Step 3: Cross multiply
    1,742.68x = 2,614.32 × 921.64
  4. Step 4: Simplify right side
    1,742.68x = 2,409,461.88
  5. Step 5: Solve for x
    x = 2,409,461.88/1,742.68
  6. Step 6: Final answer
    x = 1,382.62

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.