Home / 1,742.20-2,613.70-509.58

Finding the Fourth Proportional to 1,742.20, 2,613.70 and 509.58

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Solution

The fourth proportional to 1,742.20, 2,613.70 and 509.58 is: 764.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,742.20 : 2,613.70 = 509.58 : x
  2. Step 2: Convert to fraction form
    1,742.20/2,613.70 = 509.58/x
  3. Step 3: Cross multiply
    1,742.20x = 2,613.70 × 509.58
  4. Step 4: Simplify right side
    1,742.20x = 1,331,889.25
  5. Step 5: Solve for x
    x = 1,331,889.25/1,742.20
  6. Step 6: Final answer
    x = 764.49

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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.