Home / 1,697.68-2,343.92-1,101.28

Finding the Fourth Proportional to 1,697.68, 2,343.92 and 1,101.28

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Solution

The fourth proportional to 1,697.68, 2,343.92 and 1,101.28 is: 1,520.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,697.68 : 2,343.92 = 1,101.28 : x
  2. Step 2: Convert to fraction form
    1,697.68/2,343.92 = 1,101.28/x
  3. Step 3: Cross multiply
    1,697.68x = 2,343.92 × 1,101.28
  4. Step 4: Simplify right side
    1,697.68x = 2,581,312.22
  5. Step 5: Solve for x
    x = 2,581,312.22/1,697.68
  6. Step 6: Final answer
    x = 1,520.49

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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.