Home / 5,319.96-7,979.38-1,424.76

Finding the Fourth Proportional to 5,319.96, 7,979.38 and 1,424.76

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Solution

The fourth proportional to 5,319.96, 7,979.38 and 1,424.76 is: 2,136.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,319.96 : 7,979.38 = 1,424.76 : x
  2. Step 2: Convert to fraction form
    5,319.96/7,979.38 = 1,424.76/x
  3. Step 3: Cross multiply
    5,319.96x = 7,979.38 × 1,424.76
  4. Step 4: Simplify right side
    5,319.96x = 11,368,701.45
  5. Step 5: Solve for x
    x = 11,368,701.45/5,319.96
  6. Step 6: Final answer
    x = 2,136.99

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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.